METHODS：A tetrazolium reaction spectrophotometry method was used. 方法：采用四氮唑反应分光光度法。
METHODS:A tetrazolium reaction spectrophotometry method was used. 方法:采用四氮唑反应分光光度法。
Nitroblue tetrazolium（NBT）-reducing test was used to assess leukemia cell differentiation. 硝基四氮唑蓝还原实验检测细胞功能分化状况；
The activity of cells was measured with tetrazolium salt (MTT) assay for 12 hours,1,2,4 and 8 days. 用MTT比色法观察培养0.;5;1;2;4和8d的细胞活力。
What kind of steroidal drugs can react with the alkaline tetrazolium blue TS? What is the chemical reaction equation? 哪类甾体激素可与四氮唑蓝产生反应，是结构中的何种基团参与了反应，反应式是什么？
Cells proliferation were analyzed by cell count and methyl thiazolyl tetrazolium(MTT) assay. 瑞氏染色观察细胞形态变化；
