黄腐酸(Fulvic acid,以下简写为FA)对动物移植性肿瘤有一定抑制作用,已于前文报道。实验发现,黄腐酸对某些肿瘤(如L615白血病,网织细胞肉瘤ARS等)于常规给药时,即可产生明显抗肿瘤作用;但在另一些实验肿瘤(如肉瘤S_(37)),只有在接种瘤细胞前给药,才显示其抗肿瘤作用。黄腐酸对肿瘤细胞没有直接杀伤作用,对核分裂亦无影响,这就提出一个问题,黄腐酸的抗肿瘤作用机理何在?是否通 Fulvic acid (hereinafter abbreviated as FA) has a certain inhibitory effect on transplanted tumors in animals and has been reported previously. It was found that fulvic acid can produce significant anti-tumor effects on certain tumors (such as L615 leukemia, reticulocyte sarcoma ARS, etc.) when routinely administered, but in other experimental tumors (such as sarcoma S_ (37)) Only when given before the inoculation of tumor cells did it show its anti-tumor effect. Fulvic acid has no direct killing effect on tumor cells and has no effect on nuclear division. This raises the question of whether the anti-tumor mechanism of fulvic acid is involved.