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肠出血性大肠杆菌(Enterohemorrha-gicEscherichia coli,EHEC)O157∶H7是产Vero毒素的食源性肠道致病菌,可引起人类患血性腹泻、肾衰竭、尿毒综合征等症。本文应用热酚水法提取纯化了EHEC O157∶H7脂多糖抗原及其O-特异性多糖(O-specific polysaccharide,O-SP)侧链。菌株为EHEC
Enterohemorrhagic-Escherichia coli (EHEC) O157: H7 is a food-borne enteric pathogenic bacterium that produces Vero toxin and causes diarrhea, renal failure and uremic syndrome in humans. In this paper, we extracted and purified EHEC O157:H7 lipopolysaccharide antigen and its O-specific polysaccharide (O-SP) side chains by hot phenolic method. The strain is EHEC