细菌的脂多糖（LPS）由类脂A、核心多糖和特异性多糖三部分组成。近年来根据核心多糖相对保守的性质，国外已经制备出针对各种LPS分子中共同抗原表位的MCAb，用于临床上革兰氏阴性菌败血症患者的辅助治疗。E．C。h0111：B4菌与其它典型的革兰氏阴性致病菌一样具有血清抗性。抗O Bacterial lipopolysaccharide (LPS) by the lipid A, the core polysaccharides and polysaccharides composed of three parts. In recent years, according to the relatively conservative nature of the core polysaccharides, foreign countries have prepared MCAb targeting common epitopes in various LPS molecules for adjuvant therapy in clinically Gram-negative sepsis patients. E. C. h0111: B4 is as serological as other typical Gram-negative pathogens. Anti-O