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作者研究了大肠杆菌(E.coli)CM 891经乙二胺四乙酸(EDTA)预处理后的自发突变和诱发突变。按照液态培养法,以色氨酸位点回复突变和 A_2C 位点正向突变作为观察终点。
The authors studied spontaneous and induced mutations in E. coli CM 891 after ethylenediaminetetraacetic acid (EDTA) pretreatment. According to the liquid culture method, the tryptophan locus mutation and the forward mutation of A_2C site were taken as the observation end point.