title: A new theory about somite formation in the chick.
mesh_terms: D000818:Animals; D001755:Blastocyst / Q000502:physiology; D002642:Chick Embryo / Q000502:physiology*; D004627:Embryonic Induction; D005314:Embryonic and Fetal Development; D005775:Gastrula / Q000648:ultrastructure; D008648:Mesoderm / Q000502:physiology* / Q000648:ultrastructure; D008954:Models, Biological; D009024:Morphogenesis; D014981:Xenopus / Q000196:embryology