The embryo takes its vitamins.
Hoffman
M
M
D000818:Animals; D002642:Chick Embryo; D004622:Embryo, Mammalian / Q000187:drug effects / Q000502:physiology*; D004625:Embryo, Nonmammalian; D009024:Morphogenesis / Q000187:drug effects; D014212:Tretinoin / Q000031:analogs & derivatives / Q000494:pharmacology*
D014212:Tretinoin