... discovered verotoxin variant, VT2g, produced by bovine verocytotoxigenic Escherichia coli. Appl. Environ. Microbiol. 6 9: 754 9- 755 3. 35. Levine M. M., Xu J., Kapper J. B., Lior H., Prado V., ... Malaysia. Appl. Environ. Microbiol. 6 4:1 153 -1 156 . 59 Sodium chloride 5 g Beef Extract 1 ,5 g Yeast Extract 1 ,5 g Agar 15 g Nước cất vừa đủ 15 g pH = 7,4 ± 0,2 ( 25 0C) Nước ... of Shiga toxigenic Escherichia coli by using multiplex - PCR assay for stx1, stx2, eaeA, enterohemorrhagic E. coli hlyA, rfb0111, and rfbo 157 . J. Clinical Microbiol. 36(2 ) :5 98-602. 41....