DAKO DENMARK A/S Patent applications |
Patent application number | Title | Published |
20160033372 | TISSUE PROCESSING APPARATUS - An apparatus ( | 02-04-2016 |
20150339818 | Method and Apparatus for Image Scoring and Analysis - Methods and systems for image scoring and analysis are provided. Scored and analyzed images may include digital pathology images. Image scoring and analysis methods may include techniques to identify nuclei and determine membrane staining extent through the use of a priori models. Image scoring and analysis methods may include techniques for membrane intensity determination. Images may be scored based on an extent of membrane staining and membrane intensity. | 11-26-2015 |
20150079592 | APPARATUS AND METHOD FOR PROCESSING BIOLOGICAL SAMPLES - A method and an automated apparatus for processing at least one biological sample arranged on a slide. At least one capillary staining module has a slide rack holder configured to detachably hold a slide rack configured to hold slides, and a capillary lid rack holder configured to detachably hold a capillary lid rack configured to hold capillary lids, wherein the slide rack can be removed independently of removing the capillary lid rack. A first fluid container has a first fluid. The apparatus being configured to automatically rotate the one or more slides, and to move the lids towards the slides to automatically form a capillary gap between each slide and each capillary lid, said capillary gap functioning as a capillary chamber; and to supply an amount of the first fluid to the slide. | 03-19-2015 |
20150072891 | METHOD FOR DETECTION OF L523S EXPRESSION IN BIOLOGICAL SAMPLES - The present invention discloses methods for differentiating between normal or reactive cells and malignant cells in biological samples comprising: exposing the biological sample to an antibody to L523S protein and detecting the presence of the antibody bound to L523S protein within the malignant cells, in embodiments, such methods may further comprise: exposing the biological sample to an antibody to a second protein that is a marker of cell lineage and detecting the presence of the antibody to the second protein within cells corresponding to a particular ceil lineage and/or may comprise: exposing the biological sample to an antibody to a third protein which is a marker of cells that are normal or reactive and detecting the presence of the antibody to the third protein within cells that are normal or reactive. | 03-12-2015 |
20150017647 | TISSUE PROCESSING APPARATUS - An apparatus for processing a biological sample is provided. The biological sample being arranged on a first planar surface of a carrier, the apparatus having a second planar surface arranged substantially parallel to said first planar surface and at a first distance from said first planar surface. The first planar surface and said second planar surface are arranged at an angle (A) greater than zero degree from the horizontal plane (HP). The apparatus having a supply for supplying an amount of a liquid that is to be applied to said biological sample. The first planar surface and said second planar surface are configured to be arranged at a second distance from each other, said second distance being such that said supplied amount of liquid is distributed over said biological sample when said first planar surface and said second planar surface are brought to said second distance from each other. | 01-15-2015 |
20140315218 | NEW METHOD FOR EVALUATION OF TARGET IN HISTOLOGICAL SAMPLE - The present invention lies in the field of visualization and quantification of immobilized targets in samples using immunochemical means. In particular, the invention relates to a method and reagents for detection, visualization and quantification of a molecular target in immunostained histological samples using particular compositions of the target specific binding agent. Methods and compositions of the invention are suitable for any assay that uses a target visualization system in histological samples based on detection of the target by the target specific binding agent. The methods and compositions are useful for evaluation of targets that are biomarkers of diseases in medical diagnostic. | 10-23-2014 |
20140315204 | Immunohistochemistry Detection Method - The invention provides compositions and methods for the detection of targets in a sample; in particular, an immunohistochemistry (IHC) sample. Probes and detectable labels may be provided in multiple layers in order to increase the flexibility of a detection system, and to allow for amplification to enhance the signal from a target. The layers may be created by incorporating probes and detectable labels into larger molecular units that interact through nucleic acids base-pairing, including peptide-nucleic acid (PNA) base-pairing. Optional non-natural bases allow for degenerate base pairing schemes. The compositions and methods are compatible with immunohistochemistry (THC), but also could be used in immunocytochemistry (ICC), in situ hybridization (ISH), flow cytometry, enzyme immuno-assays (EIA), enzyme linked immuno-assays (ELISA), blotting methods (e.g. Western, Southern, and Northern), labeling inside electrophoresis systems or on surfaces or arrays, and precipitation, among other general detection assay formats. The invention is also compatible with many different types of targets, probes, and detectable labels. | 10-23-2014 |
20140286838 | APPARATUS FOR AUTOMATED PROCESSING BIOLOGICAL SAMPLES - The present invention concerns an apparatus for automatic processing at least one biological sample accommodated on a carrier member, such as slide by applying a predetermined amount of reagents in a predetermined sequence according to a processing protocol, said apparatus comprising; a housing frame; at least one processing section for accommodating at least one slide, the at least one processing section is provided within the housing; a hood cover protecting the at least one processing section in said housing; wherein the hood cover completely encloses the processing section defining an interior space; and wherein the apparatus further comprises climate control device provided to control the environment within the interior space. | 09-25-2014 |
20140242589 | HYBRIDIZATION COMPOSITIONS AND METHODS - The invention provides methods and compositions for hybridizing at least one molecule to a target. The invention may, for example, utilize a of cyclic and/or non-cyclic solvent that is non-toxic and may eliminate or reduce the amount of formamide in the hybridization composition. | 08-28-2014 |
20140234844 | HYBRIDIZATION COMPOSITIONS AND METHODS USING FORMAMIDE - The invention provides methods and compositions for hybridizing at least one molecule to a target. The composition comprises at least one nucleic acid sequence, formamide, and a hybridization solution, wherein the concentration of formamide is less than or equal to 25%. | 08-21-2014 |
20140234170 | ENHANCED SCHEDULING SAMPLE PROCESSING SYSTEM AND METHODS OF BIOLOGICAL SLIDE PROCESSING - A sample processing system | 08-21-2014 |
20140188545 | SYSTEMS AND METHODS FOR TRACKING AND PROVIDING WORKFLOW INFORMATION - A tangible computer-readable storage device storing computer-executable program instructions that generate a user interface for displaying workflow information associated with a tissue specimen in a pathology laboratory. The program instructions may be configured to perform a method including displaying a virtual laboratory component representing a physical pathology laboratory having one or more laboratory stations for processing the tissue specimen, wherein the tissue specimen is processed by the one or more laboratory stations according to a workflow, and displaying a specimen indicator that indicates a current specimen state based on a current relationship of the tissue specimen to the workflow. The method may further include enabling a first active component associated with the virtual laboratory component, wherein the first active component is configured to receive a user selection of a laboratory station and generating a supplemental view component of the selected laboratory station in response to the user selection, wherein the supplemental view provides supplemental information on processing by the selected laboratory station of the tissue specimen. | 07-03-2014 |
20140186218 | METHOD AND APPARATUS FOR AUTOMATIC STAINING OF TISSUE SAMPLES - The present invention concerns an apparatus for staining tissue samples, said apparatus including a reagent section or reagent containers; at least one staining section or tissue samples, a robotic head or robotic element that may move reagent to a predetermined tissue sample, said robotic element being moveable above the reagent and the staining sections, a control element that may manage a staining process, a 2-D optical sensor to detect two-dimensional image data of a relevant property and that can feed the captured image data to the control element. By providing the robotic element with a 2-D optical sensor, a common image processor may be provided having multiple functions. By using a 2-D optical image processing system, the control system of the apparatus may easily be adapted to read various types of data presentations, just as actual images for sections of the apparatus may be identified in order to assess the condition of the apparatus. The optical sensor may be used to automatically identify the slides and the reagent containers present in the apparatus, just as the optical sensor may be used for checking if a slide is misplaced at or absent from a slide position, etc. | 07-03-2014 |
20140099631 | APPARATUS AND METHOD FOR PROCESSING BIOLOGICAL SAMPLES AND A RESERVOIR THEREFOR - An apparatus for processing at least one biological sample accommodated on at least one carrier member ( | 04-10-2014 |
20140080145 | Monomeric and Polymeric Linkers Useful For Conjugating Biological Molecules and Other Substances - The present invention concerns monomeric or polymeric linker molecules useful in biological and chemical applications, their synthesis, and the synthesis and use of derivatives of the linkers conjugated to a variety of detectable labels and other substances. The linkers may be used, for example, in conjunction with fluorescent labels, nucleic acid or nucleic acid analog probes, and solid phase systems, and to enhance the solubility of the conjugated molecules. | 03-20-2014 |
20140051118 | Two Phase Immiscible System for the Pretreatment of Embedded Biological Samples - The present application provides a two phase immiscible system for the pretreatment of embedded biological samples comprising placing at least one support having an embedded biological sample on its surface into a pretreatment container, adding to the pretreatment container at least one reagent forming a layer, adding a carrier composition to the pretreatment container, such that reagent forming layer is formed on the top of the carrier composition, and in an amount such that the at least one reagent forming layer contacts at least a portion of the embedded biological sample. Pretreatment of the embedded biological samples can include removal of embedding medium from embedded biological, target retrieval and enzyme blocking samples before staining histochemical analysis or other processes. The system also includes an apparatus and processes of automation of the pretreatment methods. | 02-20-2014 |
20140038232 | Enhanced Scheduling Sample Processing System and Methods of Biological Slide Processing - A sample processing system | 02-06-2014 |
20140038169 | QUANTIFICATION OF SINGLE TARGET MOLECULES IN HISTOLOGICAL SAMPLES - The present invention lies in the field of visualization and quantification of immobilized targets in samples using immunochemical means. The methods of the invention utilize an immunostaining system allowing visualizing single target units in samples as distinct dots. In particular, the invention relates to methods and reagents for visualization and quantification of molecular targets immunostained in histological samples and use of said method and reagents in medical diagnostic. However, the visualization and quantification methods of the invention are applicable to a variety of targets in different samples and allow precise quantifying both relative and absolute amounts thereof. | 02-06-2014 |
20140004552 | REAGENT DELIVERY SYSTEM, DISPENSING DEVICE AND CONTAINER FOR A BIOLOGICAL STAINING APPARATUS | 01-02-2014 |
20130337441 | COMBINED HISTOLOGICAL STAIN - The present invention relates to methods of visualizing targets in histological samples, e.g. biopsy samples, wherein the methods comprise staining of the sample with (i) one or more target specific immunochemical stains, and (ii) a histological stain for specific tissue components e.g. iron, mucins glycogen, amyloid, nucleic acids, etc., e.g. hematoxilyn and/or eosin stains or the like, that is used to enhance contrast in the microscopic image of a tissue sample, highlight morphologic structures in the sample for viewing, define and examine tissues, cell populations, or organelles within individual cells. Methods may further comprise evaluation of expression of one or more targets in the sample. The disclosed methods are useful for medical diagnostics. | 12-19-2013 |
20130330252 | Apparatus For Automated Processing Biological Samples - The present invention concerns an apparatus for automatic processing at least one biological sample accommodated on a carrier member, such as a slide by applying a predetermined amount of reagents in a predetermined sequence according to a processing protocol, said apparatus comprising; a housing frame; at least one processing section for accommodating at least one slide, the at least one processing section is provided within the housing; a hood cover protecting the at least one processing section in said housing; wherein the hood cover completely encloses the processing section defining an interior space; and wherein the apparatus further comprises climate control device provided to control the environment within the interior space. | 12-12-2013 |
20130230853 | Methods and Compounds For Detection of Molecular Targets - The present invention relates to methods and compounds for detection of molecular targets, such as biological or chemical molecules, or molecular structures, in samples using a host of experimental schemes for detecting and visualizing such targets, e.g. immunohistochemistry (IHC), in situ hybridization (ISH), ELISA, Southern, Northern, and Western blotting, etc. | 09-05-2013 |
20130217108 | ENHANCED SCHEDULING SAMPLE PROCESSING SYSTEM AND METHODS OF BIOLOGICAL SLIDE PROCESSING - A sample processing system | 08-22-2013 |
20130203103 | INFORMATION NOTIFICATION SAMPLE PROCESSING SYSTEM AND METHODS OF BIOLOGICAL SLIDE PROCESSING - A sample processing system that may be automated and methods are disclosed where samples are arranged on a carrier element and a process operation control system automatically processes the samples perhaps robotically with an operationally-influential exteriorly-consequential information monitor or a data capture element. Significant process details as well as operationally-influential exteriorly-consequential information may be monitored and an automatic notice element may cause notification of a person at some display that may be remote. Various people may be notified, such as an administrator, a supplier, or a manufacturer of an opportunity for some action such as reagent reordering or the like. A simulated motion display may be included to “watch” simulated operation in real time or long after completion of the actual processing. | 08-08-2013 |
20130166345 | SYSTEMS AND METHODS FOR TRACKING AND PROVIDING WORKFLOW INFORMATION - A tangible computer-readable storage device storing computer-executable program instructions that generate a user interface for displaying workflow information associated with a tissue specimen in a pathology laboratory. The program instructions may be configured to perform a method including displaying a virtual laboratory component representing a physical pathology laboratory having one or more laboratory stations for processing the tissue specimen, wherein the tissue specimen is processed by the one or more laboratory stations according to a workflow, and displaying a specimen indicator that indicates a current specimen state based on a current relationship of the tissue specimen to the workflow. The method may further include enabling a first active component associated with the virtual laboratory component, wherein the first active component is configured to receive a user selection of a laboratory station and generating a supplemental view component of the selected laboratory station in response to the user selection, wherein the supplemental view provides supplemental information on processing by the selected laboratory station of the tissue specimen. | 06-27-2013 |
20130137136 | METHOD AND SYSTEM FOR AUTOMATED DEPARAFFINIZATION AND NON-IMMUNOHISTOCHEMICAL SPECIAL STAINING OF TISSUE SAMPLES - Disclosed are methods and systems for automated deparaffinization and histochemical staining of tissue samples. Samples are automatically deparaffinized and stained without the use of harsh chemicals and without the use of extreme temperatures. | 05-30-2013 |
20130084567 | Systems and Methods of Sample Processing and Temperature Control - Systems and methods of sample processing and temperature control are disclosed. The invention may especially relate to temperature control, and may in some embodiments be methods of temperature control of an automated sample processing system and methods of automated sample processing. Specifically, the present invention provides temperature control in relation to sample processing systems and methods of processing samples, and in some embodiments provides temperature control in relation to sample carriers and processing materials such as reagents. Corresponding systems and devices are disclosed, including sample processing systems ( | 04-04-2013 |
20130029409 | METHOD AND APPARATUS FOR AUTOMATIC STAINING OF TISSUE SAMPLES - The present invention concerns an apparatus for staining tissue samples, said apparatus including a reagent section or reagent containers; at least one staining section or tissue samples, a robotic head or robotic element that may move reagent to a predetermined tissue sample, said robotic element being moveable above the reagent and the staining sections, a control element that may manage a staining process, a 2-D optical sensor to detect two-dimensional image data of a relevant property and that can feed the captured image data to the control element. By providing the robotic element with a 2-D optical sensor, a common image processor may be provided having multiple functions. By using a 2-D optical image processing system, the control system of the apparatus may easily be adapted to read various types of data presentations, just as actual images for sections of the apparatus may be identified in order to assess the condition of the apparatus. The optical sensor may be used to automatically identify the slides and the reagent containers present in the apparatus, just as the optical sensor may be used for checking if a slide is misplaced at or absent from a slide position, etc. | 01-31-2013 |
20130023038 | Apparatus and Methods For Processing Biological Samples and a Reservoir Therefor - An apparatus for processing at least one biological sample accommodated on at least one carrier member ( | 01-24-2013 |
20120310422 | APPARATUS FOR AUTOMATED PROCESSING BIOLOGICAL SAMPLES - The present invention concerns an apparatus for automatic processing at least one biological sample accommodated on a carrier member, such as a slide by applying a predetermined amount of reagents in a predetermined sequence according to a processing protocol, said apparatus comprising; a housing frame; at least one processing section for accommodating at least one slide, the at least one processing section is provided within the housing; a hood cover protecting the at least one processing section in said housing; wherein the hood cover completely encloses the processing section defining an interior space; and wherein the apparatus further comprises climate control device provided to control the environment within the interior space. | 12-06-2012 |
20120264161 | MHC PEPTIDE COMPLEXES AND USES THEREOF IN INFECTIOUS DISEASES - Novel compounds carrying ligands capable of binding to counter receptors on relevant target cells are disclosed. The compounds possess a number of advantageous features, rendering them very suitable for a wide range of applications, including use as detection systems, detection of relevant target cells as well as a number of other methods. In particular, novel MHC complexes comprising one or more MHC molecules are disclosed. The affinity and specificity of the MHC-peptide complexes are surprisingly high. The possibility of presenting to the target cells a plurality of MHC-peptide complexes makes the MHC complexes according to the present invention an extremely powerful tool e.g. in the field of therapy and diagnosis. The invention generally relates to the field of therapy, including therapeutic methods and therapeutic compositions. Also comprised by the present invention is the sample-mounted use of MHC complexes and MHC multimers. | 10-18-2012 |
20120258126 | Molecular Vaccines for Infectious Disease - The present invention relates to methods for construction of pharmamers i.e. vaccine components characterized by their multimerization domain and the attached biologically active molecules, and their use in preparation of vaccines that contains the pharmamers alone or in combination with other molecules. The individual molecules of the construct can be bound to each other or the multimerization domain(s) by covalent or non-covalent bonds, directly or via linkers. The invention further relates to the use of such preparations in vaccine settings aimed to function as preventive/prophylactic or therapeutic vaccines in humans and animals. | 10-11-2012 |
20110318380 | MHC Multimers in Cancer Vaccines and Immune Monitoring - The present invention relates to MHC-peptide complexes and uses thereof in the diagnosis of, treatment of or vaccination against a disease in an individual. More specifically the invention discloses MHC complexes comprising cancer antigenic peptides and uses there of. | 12-29-2011 |
20110306047 | Compositions and Methods for RNA Hybridization Applications - The invention provides methods and compositions for hybridizing at least one molecule to an RNA target. The invention may, for example, eliminate the use of, or reduce the dependence on formamide in RNA hybridization applications. Compositions for use in the invention include an aqueous composition comprising at least one nucleic acid sequence and at least one polar aprotic solvent in an amount effective to enable hybridization to RNA. | 12-15-2011 |
20110236411 | MHC Multimers in Tuberculosis Diagnostics, Vaccine and Therapeutics - The present invention relates to MHC-peptide complexes and uses thereof in the diagnosis of, treatment of or vaccination against a disease in an individual. More specifically the invention discloses MHC complexes comprising | 09-29-2011 |
20110212090 | Combinatorial Analysis and Repair - A method for the repair of a unit, by specific diagnosis of the undesired state, and its appropriate repair, using said specific diagnosis as a means to repair in an appropriate way said unit. The diagnosis and repair processes may involve chemical, physical, or mechanical means. The units being diagnosed and repaired include live matter (e.g. human beings, animals, plants) as well as non-live matter (e.g. buildings, electronic equipment, polymer materials). | 09-01-2011 |
20110177500 | IMMUNOHISTOCHEMISTRY DETECTION METHOD - The invention provides compositions and methods for the detection of targets in a sample; in particular, an immunohistochemistry (IHC) sample. Probes and detectable labels may be provided in multiple layers in order to increase the flexibility of a detection system, and to allow for amplification to enhance the signal from a target. The layers may be created by incorporating probes and detectable labels into larger molecular units that interact through nucleic acids base-pairing, including peptide-nucleic acid (PNA) base-pairing. Optional non-natural bases allow for degenerate base pairing schemes. The compositions and methods are compatible with immunohistochemistry (IHC), but also could be used in immunocytochemistry (ICC), in situ hybridization (ISH), flow cytometry, enzyme immuno-assays (EIA), enzyme linked immuno-assays (ELISA), blotting methods (e.g. Western, Southern, and Northern), labeling inside electrophoresis systems or on surfaces or arrays, and precipitation, among other general detection assay formats. The invention is also compatible with many different types of targets, probes, and detectable labels. | 07-21-2011 |
20110177077 | PAX 5 MONOCLONAL ANTIBODY - The present invention relates to novel anti-human PAX 5 antibodies capable of binding to one or more epitopes located within the C-terminal regulatory domain of PAX 5. In particular the invention relates to an antibody, antigen binding fragment or recombinant protein thereof, which is capable of specific binding to an epitope located within the C-terminal fragment of human PAX 5 protein, wherein said epitope comprises from 3 to 17 amino acid residues of amino acid sequence GSPYYYSAAARGAAPPA (SEQ ID NO:2). The invention also relates to immunogenic peptide sequences for the production of the antibodies, diagnostic and therapeutic applications comprising using the antibodies and formulations comprising thereof. | 07-21-2011 |
20110144047 | COMBINED METHOD FOR PREDICTING THE RESPONSE TO AN ANTI-CANCER THERAPY - The invention provides methods for predicting the response to a topoisomerase Ilα inhibitor therapy in an individual having cancer, wherein the methods comprise the steps of determining TIMP-I DNA aberration/TIMP-1 protein aberration in combination with determining DNA aberration in TOP2A/HER2 amplicon on chromosome 17q21 including TOP2A and HER2 or aberrations of TOP2A and ErbB2 protein expression. Further provided are methods of treating cancer by using said topoisomerase Ilα inhibitor therapy. The invention also comprises a kit for the application of the methods for predicting the response to a topoisomerase Ilα inhibitor therapy in an individual having cancer. | 06-16-2011 |
20100285467 | RAPID AND SENSITIVE METHOD FOR DETECTION OF BIOLOGICAL TARGETS - The present invention relates to a method of biological labeling that occurs via a free radical chain reaction. The labeling occurs due to deposition of a detectable reporter molecule from a media comprising a substance comprising at least two moieties of a peroxidase enzyme substrate (termed herein ‘cross-linker’) in a target site comprising peroxidase activity and a biological marker. The labeling reaction described herein may generally be used to detect targets in a host of experimental schemes for detecting and visualizing a biological or chemical target, including immunohistochemistry (IHC), in situ hybridization (ISH), antibody-based staining methods such as ELISA, Southern, Northern, and Western blotting, and others. | 11-11-2010 |
20100248257 | Compiled Methods for Analysing and Sorting Samples - The present invention relates to the fields of analysis, diagnostics, prognostics, standardization, characterization and enumeration of entities such as biological cells, as well as therapeutical applications. Accordingly, the present invention in preferred aspects is directed to methods for the detection and/or analysis and/or isolation and optionally further manipulation of entities, such as cells, particles, and supra-molecular structures. | 09-30-2010 |
20100226854 | MHC Peptide Complexes and Uses Thereof in Infectious Diseases - Novel compounds carrying ligands capable of binding to counter receptors on relevant target cells are disclosed. The compounds possess a number of advantageous features, rendering them very suitable for a wide range of applications, including use as detection systems, detection of relevant target cells as well as a number of other methods. In particular, novel MHC complexes comprising one or more MHC molecules are disclosed. The affinity and specificity of the MHC-peptide complexes are surprisingly high. The possibility of presenting to the target cells a plurality of MHC-peptide complexes makes the MHC complexes according to the present invention an extremely powerful tool e.g. in the field of therapy and diagnosis. The invention generally relates to the field of therapy, including therapeutic methods and therapeutic compositions. Also comprised by the present invention is the sample-mounted use of MHC complexes and MHC multimers. | 09-09-2010 |
20100168390 | MHC MULTIMERS, METHODS FOR THEIR GENERATION, LABELING AND USE - The present invention describes novel methods to generate MHC multimers and methods to improve existing and new MHC multimers. The invention also describes improved methods for the use of MHC multimers in analysis of T-cells in samples including diagnostic and prognostic methods. Furthermore the use of MHC multimers in therapy are described, e.g. anti-tumour and anti-virus therapy, including isolation of antigen specific T-cells capable of inactivation or elimination of undesirable targeT-cells or isolation of specific T-cells capable of regulation of other immune cells. | 07-01-2010 |
20100105145 | METHOD OF SIMULTANEOUSLY VISUALIZING MULTIPLE BIOLOGICAL TARGETS - The present invention relates to optionally automated methods that may be used to qualitatively and/or quantitatively detect at least one, or for example, two or more different targets in a sample, and kits associated with such methods. The two or more different targets may be detected and distinguished by adding at least one cross-linking agent to the sample in between different steps of a detection procedure. The addition of a cross-linking agent may allow for drastic changes in buffer conditions (i.e. solvent, pH, salt concentration, etc.) or temperature in order to refine a detection procedure with minimal loss of signal. The instant invention is compatible with a variety of detection systems, including immunohistochemistry (IHC), immunocytochemistry (ICC), in situ hybridization (ISH), flow cytometry, enzyme immuno-assays (EIA), enzyme linked immuno-assays (ELISA), blotting methods (e.g. Western, Southern, and Northern), labeling inside electrophoresis systems or on surfaces or arrays, and precipitation, among other general detection assay formats. The invention is also compatible with many different types of samples, targets, probes, and detectable labels. | 04-29-2010 |
20100105030 | NUCLEIC ACID BASE PAIRS - The invention relates to non-natural bases and base pairs that expand the normal DNA-based encoding system. Compositions herein may comprise at least one non-natural base that may interact with another base via a Watson Crick-type hydrogen bonding geometry and/or a Hoogsteen-type hydrogen bonding geometry. The bases may be used in a molecular entity, such as an oligomer or any other entity wherein the bases are attached to a backbone. For example, they may be comprised in DNA, RNA, or PNA, or a variety of other nucleic acid-type systems. | 04-29-2010 |