棘球蚴B抗原是一种耐热的160kDa脂蛋白,为棘球蚴囊液的主要抗原。有约90％细粒棘球蚴病人和约40％泡状棘球蚴病人有其抗体,说明这两种棘球蚴均有B抗原。经免疫荧光检测它主要存在于原头节的表皮细胞,也存在于囊液中,表明它是一种分泌性抗原。 最近已从英国羊获得的细粒棘球蚴中分 Echinococcum B antigen is a heat-resistant 160kDa lipoprotein, the main antigen for hydatid cyst fluid. About 90% of patients with echinococcus granulosus and about 40% of patients with bubble-shaped hydatid cysts have their antibodies, indicating that both Echinococcus granulosus have B antigen. It is mainly detected in the epidermal cells of the proroca by immunofluorescence and is also present in the cystic fluid, indicating that it is a secreted antigen. Recently, Echinococcus granulosus was obtained from British sheep