title: New aspects of early embryonic induction in amphibians.
mesh_terms: D000663:Amphibians / Q000196:embryology*; D000818:Animals; D001921:Brain / Q000196:embryology; D002118:Calcium / Q000502:physiology; D002450:Cell Communication; D002454:Cell Differentiation; D000242:Cyclic AMP / Q000502:physiology; D004475:Ectoderm / Q000166:cytology; D004627:Embryonic Induction; D005775:Gastrula / Q000166:cytology; D008648:Mesoderm / Q000166:cytology; D009420:Nervous System / Q000196:embryology; D011506:Proteins / Q000502:physiology
chemical_list: D011506:Proteins; D000242:Cyclic AMP; D002118:Calcium