据辉瑞公司称，遭质疑的几批奈非那韦的甲基磺酸乙酯或EMS(一种可疑的人类致癌物质)超标。
According to Pfizer, the questionable batches of Viracept contained an unusually high level of the compound ethyl methanesulfonate, or EMS, a suspected human carcinogen.
据辉瑞公司称，遭质疑的几批奈非那韦的甲基磺酸乙酯或EMS(一种可疑的人类致癌物质)超标。
According to Pfizer, the questionable batches of Viracept contained an unusually high level of the compound ethyl methanesulfonate, or EMS, a suspected human carcinogen.
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