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Isolation of citrate-positive variants of Escherichia coli from domestic pigeons pigs cattle and horses.

机译:从家鸽猪牛和马中分离出柠檬酸阳性的大肠杆菌。

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摘要

Twenty-seven isolates of citrate-positive variants of Escherichia coli were obtained from domestic pigeons, pigs, cattle, and horses. With the exception of citrate utilization, all isolates closely resembled typical E. coli in their biochemical reactions. These isolates were multiply resistant to antibiotics in in vitro susceptibility tests. Transfer experiments of multiple-drug resistance to the E. coli K-12 strain showed that all citrate-positive isolates from domestic pigeons, pigs, and cattle, resistant to three or more drugs, carried R plasmids showing temperature-sensitive transfer.
机译:从家鸽,猪,牛和马中获得了大肠杆菌柠檬酸阳性变体的27个分离株。除利用柠檬酸盐外,所有分离物的生化反应均与典型的大肠杆菌极为相似。这些分离株在体外药敏试验中对抗生素具有多重耐药性。对大肠杆菌K-12菌株具有多重耐药性的转移实验表明,来自家鸽,猪和牛的所有对三种或三种以上药物具有抗性的柠檬酸盐阳性分离株均带有R质粒,对温度敏感。

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