维生素A能维持上皮组织的正常机能,参与视紫质的合成,增强视纲膜的感光性能,维生素A酸的生理功能类似维生素A。近十几年来,发现维生素A和维生素A酸对实验性肿瘤具有阻止发生和治疗作用。并初步的试用于人类肿瘤,并获得一定疗效。本文、仅就两种化合物在肿瘤方面的应用,作 Vitamin A can maintain the normal function of epithelial tissue, participate in the synthesis of rhodopsin, and enhance the photographic performance of the membrane, vitamin A acid physiological function similar to vitamin A. In the past decade, vitamin A and vitamin A acid have been found to have an inhibitory effect on experimental tumors. And preliminary trials for human tumors, and get a certain effect. This article, only for the application of two compounds in the tumor,