Methods: the human breast cancer MCF7 cell proliferation was determined by MTT spectrophotometry, the human breast cancer MCF7 cell FAS was partially purified by ultra-centrifugation.
方法MTT法测定人乳腺癌MCF7细胞增殖速度，采用超速离心技术部分纯化人乳腺癌MCF7细胞FAS。
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The specimens were prepared with hot AGAR centrifugation for ultra-thin sections and observed with transmission electron microscopy (TEM).