BACTERIOPHAGE-RESISTANT MUTANTS OF PASTEURELLA PESTIS AND THEIR PROPERTIES
ARMY AVIATION BOARD FORT RUCKER AL
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An inquiry was made into spontaneous mutation from the bacteriophage- sensitivity to bacteriophage-resistance in Past. pestis of different virulence. According to preliminary data, mutants resistant to bacteriophage appeared irrespective of the degree of the initial strain virulence and of the bacteriophage species used. Variants were isolated from the mutants which by their chemical properties and capacity to grow on differential-diagnostic media and high pathogenicity for rabbits could be referred to pseudotuberculosis causative agents.