Japanese Journal of Veterinary Research;Volume 8, Number 1-4

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STUDIES ON BACTERIOPHAGE TYPING OF STAPHYLOCOCCI ISOLATED FROM BOVINE MILK : III. TYPING BY MEANS OF A NEW PHAGE SET

NAKAGAWA, Masaro

Permalink : http://hdl.handle.net/2115/4691
JaLCDOI : 10.14943/jjvr.8.1-4.331

Abstract

A new phage set was proposed for the typing of milk strains and its suitability was examined. Conclusions are summarized as follows : 1. Out of 77 phages isolated from lysogenic milk strains of staphylococci, 16 were selected for the typing of milk strains and were named the "bovine phages". 2. These bovine phages were classified into two groups according to their host ranges; one was called group A and the other group B. The phages of group A were subdivided into types A_1 and A_2. 3. It was proved that the bovine phages were more suitable than the International phages for the typing of staphylococcal strains isolated from bovine milk in Japan. 4. The relationship between the bovine phages and the International phages was shown. 5. The reacting ability of the bovine phages seemed to be limited to milk strains. The author wishes to express his cordial thanks to Prof. K. HIRATO, the chief of this Department, for his helpful advice and review of this paper. The author is indebted to Dr. Y. OCHI of Tokyo University and Dr. Y. TAJIMA, Institute for Infectious Diseases, Tokyo University, for their kind supply of the strains of staphylococci.

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