恶性肿瘤,细胞之间“个体”差异甚大,对化学药物的敏感性不一。普通内科病房的常规剂量的化疗,可将绝大部分肿瘤细胞杀死,而小部分耐药细胞则得以“偷生”,造成复发、转移。加大化疗药物的剂量可以彻底消灭这一部分耐药细胞。但剂量过大的化疗会使患者正常造血细胞无法恢复,死于骨髓与免疫功能衰竭。若将造血细胞于化疗前在体外保存起来,待化疗药物在体内排泄完了之后再 Malignant tumors have very different “individuals” between cells and have different sensitivity to chemical drugs. The conventional dose of chemotherapy in the general medical ward can kill most of the tumor cells, while a small part of the drug-resistant cells can be “stolen” and cause recurrence and metastasis. Increasing the dose of chemotherapy drugs can completely eliminate this part of the drug-resistant cells. However, excessive doses of chemotherapy can make normal hematopoietic cells unable to recover, die from bone marrow and immune failure. If the hematopoietic cells are preserved in vitro before chemotherapy, after the chemotherapeutic drugs are excreted in the body,