"01473393-n"^^ . . . "0"^^ . "101473393"^^ . . . . . . . "allantois"^^ . . . . "the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)"@en-us . . . . "allantois"@en-us . "the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates (reptiles, birds and mammals)"@en-us . . "0"^^ . "101396281"@en-us . . .