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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,牛和马匹中分离大肠杆菌的柠檬酸盐阳性变种。

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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,牛和马匹获得大肠杆菌的二十七分离株的柠檬酸盐阳性变体。除了柠檬酸盐利用外,所有分离物在其生化反应中均比典型的大肠杆菌相似。这些分离株在体外易感性测试中对抗生素造成抗性。对大肠杆菌K-12菌株的多种药物抗性的转移实验表明,所有来自家鸽,猪和牛的含有柠檬酸盐阳性分离物,耐药三种或更多种药物,携带r质粒显示温度敏感的转移。

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