title: Gastrulation in birds: a model system for the study of animal morphogenesis.
mesh_terms: D000818:Animals; D001717:Birds / Q000196:embryology*; D002454:Cell Differentiation; D004627:Embryonic Induction; D005775:Gastrula / Q000502:physiology*; D008648:Mesoderm / Q000502:physiology; D009024:Morphogenesis