恶性肿瘤的防治还面临着困维,就以药物治疗恶性肿瘤来说,由于癌症的化疗多系采用细胞毒的药(天然或合成)来干扰,抑制、杀伤癌细胞的治疗方法,安全界限差,特异性弱,仍处于较低级阶展,临床的毒、副反应有局部与全身、近期与远期毒性反应。重要脏器的损害,往往是限制用药,停 The prevention and treatment of malignant tumors is still facing difficulties. For the treatment of malignant tumors with drugs, cancer chemotherapy is mostly based on the use of cytotoxic drugs (natural or synthetic) to interfere with the treatment of cancer cells. The specificity is weak, and it is still at a lower level. The clinical toxicity and side reactions have local and systemic, short-term and long-term toxicities. Damage to important organs is often limited medication, stopping