antimetabolite

Effects of surgical therapy are not ideal. Parmaceutical studies have been developed, including antimetabolite, corticosteroid, nutramines, calcium-channel blockers, gene therapy and so on.

由于PVR的手术治疗效果仍不理想，许多学者已经研究了多种药物防治PVR，包括抗代谢药物、皮质类固醇药物、维生素类药物、钙通道阻滞剂以及基因治疗等。

In conclusion, the abnormal clone, induced by cytogenetics abnormity, oncogene and chromatosome damnification caused by antimetabolite yield, may be a reason of occurrence of second tumor.

初步研究结果提示，细胞遗传学的异常、癌基因的存在，以及抗代谢药（羟基脲等）损伤染色体，产生异常的克隆，可能是发生第二肿瘤的原因。

The chemotherapy of tumor is one the three general therapeutics in clinic therapy, now chemotherapy is developed into many systems which includes alkylating agent 、 antimetabolite 、 biologic response regulator.

肿瘤的化疗是临床治疗的三大常规疗法之一，目前化疗已经发展成为包括烷化剂、抗代谢剂、分化诱导剂、生物反应调节剂等多个体系。