VIRxSYS Issued Third U.S. Patent This Year for Its Spliceosome-Mediated RNA Trans-Splicing (SMaRT(TM)) Program; Breakthrough RNA Therapeutic Platform GAITHERSBURG, MD--(Marketwire - Sep 22, 2011) - VIRxSYS Corporation, a Maryland-based biotechnology company, today announced that the United States Patent and Trademark Office has issued a third...