title: The embryonic rat parietal yolk sac. Changes in the morphology and composition of its basement membrane during development.
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D001485:Basement Membrane / Q000378:metabolism / Q000648:ultrastructure; D050260:Carbohydrate Metabolism; D003094:Collagen / Q000378:metabolism; D005260:Female; D005865:Gestational Age; D011506:Proteins / Q000378:metabolism; D051381:Rats / Q000196:embryology*; D014817:Vitelline Membrane / Q000166:cytology / Q000648:ultrastructure*
chemical_list: D000596:Amino Acids; D011506:Proteins; D003094:Collagen