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Preliminary Observations on the Isolation of Escherichia coli Bacteriophages from the Intestinal Contents of Chickens

By T. R. S. Bhatia and R. A. Boroski


Eschericia coli bacteriophages were isolated from the intestines of chickens. These phages had different lytic patterns, and were propagated in nutrient broth containing 0.4 gm calcium chloride/litre. The agar layer technique was used to determine the routine test dilution (RTD) and plaque morphology. The phages differed in their 1) morphology, 2) RTD values, and their ability to lyse E. coli strains from various animals. All phages isolated lysed human K12 E. coli strains, whereas only two phages lysed the chicken E. coli strain. Phages isolated lysed E. coli from chicken, bovine, ovine, equine, and human, but not from porcine, canine and other avian species

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