. "the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois"@en-us . "the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois"@en-us . "chorioallantois"@en-us . . "101473620"^^ . "chorioallantoic membrane"@en-us . . "0"^^ . . . . . "01473620-n"^^ . . "chorioallantois"^^ . . . . . . "101396472"@en-us . . "0"^^ . .