血虫体属，附红细胞体属：立克次体目(Rickettsiales)无形体科(Anaplasmataceae)的一属寄生菌，有时可在啮齿动物、牛、羊、猪中致病；模式种为类球状血虫体(E.coccoides)- chorioallantois
- chorioamnionitis
- chorioangiofibroma
- chorioangioma
- chorioblastoma
- chorioblastosis
- choriocapillaris
- choriocarcinoma
- choriocele
- chorioepithelioma
- choriogenesis
- chorioid
- chorioidea
- chorioido-
- chorioma
- choriomammotropin
- choriomeningitis
- chorion
- chorionepithelioma
- chorionic
- chorioplacental
- Chorioptes
- chorioretinal
- chorioretinitis
- chorioretinopathy