致病性大肠埃希菌(EPEC)是引起细菌性腹泻而致死的主要致病菌,在发展中国家的青少年中尤为多见。引起腹泻的机制是含有质粒密码的AF/R1、菌毛对肠刷状缘转移细胞的粘附、侵袭而导致肠粘膜上皮细胞刷状缘的酶缺乏,钠吸收障碍,氯化物排泄过多而致。表皮生长因子(EGF)是含有53个氨基酸的多肽,它主要由唾液腺和肾所合成,而乳腺、肝脏、小肠及胰腺分泌较少。EGF Pathogenic Escherichia coli (EPEC) is the leading cause of bacterial diarrhea and death, especially among adolescents in developing countries. Diarrhea caused by the mechanism is containing the plasmid code AF / R1, pilus brush border cells of intestinal brush cell adhesion, invasion led to intestinal epithelial brush border enzyme deficiency, sodium absorption disorders, chloride excretion and more To Epidermal growth factor (EGF) is a 53 amino acid polypeptide that is mainly synthesized by salivary glands and kidneys but secreted less by the breast, liver, small intestine and pancreas. EGF