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自1956年起,Upjohn公司开始从事寻找新的抗肿瘤药物研究。此项研究主要包括以下几个方面: (1)选择可能产生药物的微生物;(2)发展合适的体外筛选方法,从大量培养物中初筛可
Since 1956 Upjohn Corporation has been engaged in the search for new anti-cancer drug research. This research mainly includes the following aspects: (1) selecting the microorganisms that may produce drugs; (2) developing suitable in vitro screening methods, screening from a large number of cultures