title: Morphogenetic activity prepattern in embryonic epithelia.
mesh_terms: D000818:Animals; D004622:Embryo, Mammalian / Q000502:physiology*; D004625:Embryo, Nonmammalian; D005314:Embryonic and Fetal Development; D004848:Epithelium / Q000502:physiology; D005775:Gastrula / Q000502:physiology; D008954:Models, Biological; D009024:Morphogenesis