20110189224 | PESTIVIRUS REPLICONS PROVIDING AN RNA-BASED VIRAL VECTOR SYSTEM - The present invention concerns replicons of pestiviruses, in particular replicons of swine fever virus, engineered to have a defective replication thereby having lost infectivity, and further containing a foreign gene. A replicon of the invention contains all the genetic information required for its replication, but lacks essential codons or all codons of at least one of the genes encoding the viral structural proteins E1, E2, E | 08-04-2011 |