Mitra Chalabzardi - Department of Biology,School of Science, Ilam University,Ilam, Iran

Escherichia coli of the most important factors in the world is caused by endemic and epidemic . among the general E.coli resistant to antibiotics the prevalence of strains resistant to tetracycline above abundance. the side low effects of antibiotics because of low prices and range In the treatment of human and anima l infections, the main causes of the spread of plasmids and transposons among the general E.coli tetracycline resistance genes . the aimof this study was to determine the amount of tetracycline resistance genes in strains Escherichia coli isolated from pathogenic in Ilam.

tetracycline, Escherichia coli ,diarrhea,tet gene