title: An electron microscopical study of the development of the teleost heart.
mesh_terms: D000818:Animals; D005399:Fishes / Q000196:embryology*; D006321:Heart / Q000196:embryology*; D008675:Metamorphosis, Biological; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D009206:Myocardium / Q000166:cytology