title: Ultrastructural studies of chicken embryo chorioallantoic membrane during incubation.
mesh_terms: D000482:Allantois / Q000648:ultrastructure; D000818:Animals; D002642:Chick Embryo / Q000166:cytology*; D002823:Chorion / Q000648:ultrastructure*; D004848:Epithelium / Q000648:ultrastructure; D013997:Time Factors