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For this study, ten complex class 1 integron was characterized in Escherichia coli (E. coli) isolates from Zhenjiang. Among the ten isolates, five included the blaCTX-M-1 gene between orf513 and the IS 3000. Analysis the five isolates by PFGE showed that zj102 and zj562 had same patterns profiles, which suggested that the spread of a specific clone contributed to a wide dissemination of a particular...
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