HS-tk vector injected into tumor cells to express the gene for thymidine kinase: Began a Phase I/II trial with partner Sandoz Pharma Ltd. in six patients, with

Genetic Therapy Inc. (GTII), Gaithersburg, Md. Product: HS-tk vector injected into tumor cells to express the gene for thymidine kinase, making the cells susceptible to ganciclovir Indication: Maligna...