α2巨球蛋白(α2M)是存在于动物血浆中的一种非特异性的蛋白酶抑制剂(M utsureoet al.,2000)。有关鱼类α2M的研究很少,到目前为止还未见有关草鱼α2M基因方面的报道。本课题组在研究嗜水气单胞菌时发现,鲫鱼易感嗜水气单胞菌,草鱼不易感,在几种常见淡水养殖鱼中,草鱼血浆中α2 α2 macroglobulin (α2M) is a nonspecific protease inhibitor present in animal plasma (Mütsureo et al., 2000). Little research has been done on fish α2M, so far there is no report about α2M gene in grass carp. The research group found Aeromonas hydrophila, carp susceptible Aeromonas hydrophila, grass carp is not easy, in several common freshwater cultured fish, grass carp plasma α2