title: Study of proliferative activity in the wing primordium of the chick embryo on the third and fourth day of incubation.
mesh_terms: D000818:Animals; D002453:Cell Cycle; D002455:Cell Division; D002642:Chick Embryo / Q000166:cytology*; D008940:Mitotic Index; D014921:Wings, Animal / Q000196:embryology*