Methods: the drug sensitivity or resistance of 40 NSCLC samples to 9 chemotherapeutic drugs and combined chemotherapy were detected by MTT colorimetric assay, and compared the results.
方法：应用MTT显色分析法测定40例非小细胞肺癌实体瘤标本对9种化疗药物及其组成的联合化疗方案的敏感性或耐药性，并比较结果。
Objective To introduce a quantitative colorimetric assay based on a tetrazolium salt (MTT).
目的介绍一种用四氮唑蓝（MTT）为底物的酶反应定量比色分析法。
Results: the cell growth curve of 3ao obtained by the XTT colorimetric assay was not only similar to the MTT assay, but also more rapid and simpler than MTT.
结果：xtt比色法检测获得的3ao细胞生长曲线与应用MTT法获得的细胞生长曲线大致相同，且比MTT法更加快速简便。
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