Lysogeny and Bacteriophage Typing in Coagulase Positive Staphylococci

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Abstract
Seventy-six typable and 20 nontypable strains of staphylococci were examined for lysogeny and for determination of the host range of the carried temperate phage. Strains from a given lytic group were found to carry phage active on other bacterial strains of the same phage typing group. This relationship was employed to determine the typing group affinities of nontypable strains, to confirm the general validity of the phage typing scheme and as a basis for suggested improvements in the typing scheme. Strains of staphylococci with identical lytic patterns but from different sources often differed in their lysogenic relationships.