Drug-resistance of Enteric Bacteria

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  • 腸内細菌の薬剤耐性に関する研究
  • チョウ ナイ サイキン ノ ヤクザイ タイセイ ニ カンスル ケンキュウ ゾク
  • R MF31 factor that segregates several types of R factor
  • 続報種々なるタイプのR因子を自然にsegregateする4剤耐性因子 (RMF31) について

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It was reported that many types of drug-resistant E. coli, Shigella, and E. freundii were isolated in the field survey and seven types of transmissible drug-resistance (R) factor were isolated. In the study of drug-resistant E. coli from the patients afflicted with tuberculosis, carriers of several types of R factor were found. The RMF31 factor obtained from this survey was transmissible by conjugation and able to confer drug-resistance to TC, CM, SM and SA. From the segregation of RMF31 factor, R (CM·SM·SA), R (TC·CM), R (SM·SA) and R (CM) were obtained, which were all transferable by conjugation except R (SM·SA) factor.

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