the aim of this study was to determine the frequency of enterotoxigenic and enteroaggregative strains ofescherichia coli in chicken carcasses by polymerase chain reaction (pcr). in this study 63 strains of e. coliwere isolated from 110 samples of chicken carcasses during processing after chilling in the poultry slaughterhouse of shahrekord. polymerase chain reaction assays were used to detect t...