title: Vitamin A and the control of pattern in developing limbs.
mesh_terms: D000818:Animals; D002454:Cell Differentiation / Q000187:drug effects*; D002642:Chick Embryo; D004224:Diterpenes; D004627:Embryonic Induction / Q000187:drug effects*; D005121:Extremities / Q000196:embryology*; D014677:Pharmaceutical Vehicles; D012038:Regeneration / Q000187:drug effects; D000084562:Retinyl Esters; D013997:Time Factors; D014212:Tretinoin / Q000494:pharmacology; D014801:Vitamin A / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000494:pharmacology*
chemical_list: D004224:Diterpenes; D014677:Pharmaceutical Vehicles; D000084562:Retinyl Esters; D014801:Vitamin A; C014794:retinol palmitate; D014212:Tretinoin