Abstract
In this study E.coli bacteriophe isolated from kasa sou .Host range of this bacteriophage have been studied on both isolates turbid and clear plugs .Bacteriophage tolerance of temperature indicated that the isolated phage able to laysis host cells until 40C .bacteriophage tolerance to NaCl salt also included in this study the highest salt concentration that the phae unable to lyse host cell was 2.0 %
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