目前抗肿瘤药物一个基本特点,即抑制细胞的有丝分裂指数,因此增殖旺盛的瘤细胞及体内迅速更新的正常细胞如胃肠道粘膜上皮细胞、骨髓细胞、生殖细胞等都受到抑制。抗肿瘤药物缺乏特异的选择性,其有效剂量与中毒剂量又很接近,安全系数较低,加以患者的体质、年令、性别等个体差异,对药物的敏感性、毒性耐受性及恢复程度等均不相同,所以治疗中一定要严密观察,以 At present, one of the basic characteristics of anti-tumor drugs is that they inhibit the mitotic index of cells, so tumor cells that thrive and rapidly regenerating normal cells such as gastrointestinal mucosal epithelial cells, bone marrow cells, and germ cells are inhibited. Antitumor drugs lack specific selectivity, their effective doses and toxic doses are very close, the safety factor is low, and the individual’s constitution, annual orders, gender, etc. are individual differences, and the sensitivity, toxicity tolerance and recovery degree of drugs And so on, so they must be closely observed during treatment.