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目的：对比研究ｂ９９ｍ Ｔｃ－甲氧异晴（９９ｍ Ｔｃ－ＭＩＢＩ）和３Ｈ－柔红霉素在耐药瘤株与敏感瘤株的摄取及各种转换剂对上述两种药物的摄取的影响。方法：采用人药物敏感的鼻咽癌瘤株ＫＢ－３－１和耐药瘤株ＫＢ－Ａ１，以反转录聚合酶链式反应评价ｍｄｒｌ基因的表
OBJECTIVE: To compare the uptake of b99m Tc-MIBI and 3H-daunorubicin in drug-resistant strains and sensitive tumor strains and the effects of various transformants on uptake of these two drugs. Methods: The human drug-sensitive nasopharyngeal carcinoma KB-3-1 and the resistant KB-A1 were used to evaluate the expression of mdr1 gene by reverse transcription-polymerase chain reaction