Fig. 2

Representative gel electrophoresis results of PCR products for virulence genes. (A) Shiga toxin2 gene (350 bp); (B) intimin gene (450 bp); (C) hemolysin gene (167 bp) and (D) heat-stable enterotoxin gene (294 bp). L = lane, L1 = ladder (100 bp) (Himedia; India, 2017), bp = base pairs, L2 was a positive control for all genes and L8, L13, L10, and L8 were negative controls for the stx2, eae, hlyA and st genes, respectively