title: Transmission problem in the primary induction.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002490:Central Nervous System / Q000196:embryology*; D004627:Embryonic Induction; D005775:Gastrula / Q000502:physiology*; D009995:Osmosis; D014319:Triturus / Q000196:embryology*