英国�学家格里菲斯根据肺炎双球菌的转化实验推断出s型菌中的某种物质能将r型菌转化为s型菌.美国�学家艾弗里及其同事对s型菌中的物质进行提纯和 Template




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tomski英国�学家格里菲斯根据肺炎双球菌的转化实验推断出s型菌中的某种物质能将r型菌转化为s型菌.美国�学家艾弗里及其同事对s型菌中的物质进行提纯和 coloring