虽然碱性氨基酸L-精氨酸被认为只当活跃生长时才是必要的,但给成年动物补充精氨酸有免疫刺激作用,它能减慢一些实验诱发肿瘤的生长和播散。对于人类,精氨酸增强淋巴细胞转化;但关于精氨酸对其它免疫机制的影响,所知甚少。NK细胞及LAK细胞在人类抗肿瘤防御中具有重要作用,但可能被恶性肿瘤发展过程所抑制。研究L-精氨酸作为人类NK细胞和LAK细胞的一种可能的生物学调节剂, Although the basic amino acid L-arginine is thought to be necessary only when it is actively growing, supplementing arginine to adult animals has an immunostimulatory effect, which can slow the growth and spread of tumors induced by some experiments. In humans, arginine enhances lymphocyte transformation; little is known about the effects of arginine on other immune mechanisms. NK cells and LAK cells play an important role in human anti-tumor defense, but may be inhibited by the development of malignant tumors. To study L-arginine as a possible biological regulator of human NK cells and LAK cells,