GAITHERSBURG, Md.--(BUSINESS WIRE)--Silvec Biologics Inc., a Maryland-based agricultural biotechnology company, is pleased to announce that its novel RNA-based therapy delivery product is now registered for unconditional commercial use under the U.S. Environmental Protection Agency’s (EPA) Federal Insecticide, Fungicide and Rodenticide Act. The product is based on a naturally non-transmitted version of the citrus tristeza virus that is already found in most Florida citrus trees that has been re