On the role of the "apical ridge" in the development of the chick embryo limb bud.
D000818:Animals; D002642:Chick Embryo; D005121:Extremities / Q000196:embryology*; D006801:Humans; D018878:Limb Buds; D011200:Poultry / Q000196:embryology*
EXTREMITIES/embryology; POULTRY/embryology