大肠杆菌K88ac、K99和987P纤毛抗原的纯化及抗血清的制备

PURIFICATION OF THE K88、K99、987P ANTIGENS FROM E.COLI AND PREPARATION OF THEIR ANTISERUMS

产肠毒素大肠杆菌(ETEC)是新生畜(仔猪、羔羊和犊牛)腹泻的主要病因之一,其致病因子包括纤毛抗原和肠毒素。我们参照国外学者De Graaf和Isaacson等人的方法分别纯化了K88ac、K99和987P三种纤毛抗原并制备出三种高特异性抗血清。纯化用K88菌株C83549(0149:K91,K88ac),K99菌株C83644(0101:K99),987P菌株C83710(020:987P)均由中国兽医药品监察所提供。K88菌用改良Minca培养基,K99菌用Minca培养基,987P用胰酶水解大豆酪蛋白胨肉汤培养基。