原始神经外胚层肿瘤 PNET ; primitive neuroectodermal tumor ; peripheral primitive neuroectodermal tumor ; PNET--primitive neuroectodermal tumor

原始内胚层 [胚] primitive endoderm ; primary endoderm ; entoderm primitive ; primary endoblast

原始神经外胚层瘤 PNET ; primitive neuroectodermal-tumor ; primitive neuroectodermal tumor PNET ; peripheral primitive neuroeetodermal tumor

原始外胚层 primitive ectoderm ; primary ectoderm

原肠中胚层 gastral mesoderm ; gastrular mesoderm

原胚柄层 [植] prosuspensor tier

原中胚层 primary mesoderm

上胚层原肠〔胚〕形成 epiblastic gastrulation

原内胚层细胞 primodial endoderm cell