The chemosensitivity of multidrug resistant cell MCF-7Adr and drug sensitive cell MCF-7WTto doxorubicin,vincristine and colchicine was tested by MTT assay.

• 用MTT方法测定了多药抗药细胞MCF－7Adr及其敏感细胞MCF－7WT对阿霉素、长春新碱、秋水仙碱的化学敏感性。