FOLH1 and neoplasm: The PSMAΔ was expressed in SK-OV-3 cells, a human tumor cell line routinely utilized in our laboratory for the high titer production of HSV stocks, and in the murine tumor LLC1 and Renca cells, syngeneic with C57BL/6 and BALB/c mice, respectively, thus generating LLC1-PSMAΔ and Renca-PSMAΔ (hereinafter called LLC1-PSMA and Renca-PSMA).