Objective:Analyzing the affecting factors of forming competent cells of Escherichia coli JM109 to increase transformation efficiency.
目的：分析大肠杆菌JM109感受态形成因素，提高转化效率。
Objective:Analyzing the affecting factors of forming competent cells of Escherichia coli JM109 to increase transformation efficiency.
目的：分析大肠杆菌JM109感受态形成因素，提高转化效率。
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