Fig. 1From: Multiple antibiotic resistances among Shiga toxin producing Escherichia coli O157 in feces of dairy cattle farms in Eastern Cape of South AfricaGel image of amplified PCR products from study isolates with primers designed for stx1 virulent gene. Lane 1 is the MWM (100 bp), lane 2 is the negative control (PCR mix without DNA) with lane 3 as positive control (E. coli ATCC 35150) while lanes 4 to 13 are stx1 (555 bp) gene amplified from O157 isolatesBack to article page