Objective: To study retrovirus (RV)-mediated transduction of gastric carcinoma cells with the herpes simplex virus thymidine kinase (HSV-tk) gene and the subsequent treatment with ganciclovir(GCV).

• 目的：探讨逆转录病毒介导的单纯疱疹病毒胸苷激酶(HSV-TK)基因系统对人胃癌细胞的转染及杀伤作用。