This invention is directed to a plus strand RNA viral vector for transformation of a host organism with a foreign RNA, and expression of said foreign RNA. The foreign RNA is inserted into an infective RNA viral segment containing cis-acting viral replication elements, and allowed to infect the host organism....http://www.google.com.au/patents/US6300133?utm_source=gb-gplus-sharePatent US6300133 - RNA transformation vectors derived from an uncapped single-component RNA virus
