The College of Science at the University of Basrah organized a seminar entitled (Types of pathogenic E. coli in clinical cases) by the graduate student. Basha’aer Khalaf Ismail... The study aims .to identify the types pf toxin produced by E.coli isolated from different pathogenic cases and which one more virulence and the antibiotics resistance as a sub sequencing for this infection and included brief description of the toxin produced by E coli and their role in pathogenesis.