title: Innervation of the vertebrate heart as studied with the electron microscope.
mesh_terms: D000663:Amphibians; D000818:Animals; D001341:Autonomic Nervous System / Q000166:cytology; D001369:Axons; D001717:Birds; D004285:Dogs; D005399:Fishes; D006168:Guinea Pigs; D006321:Heart / Q000294:innervation*; D006801:Humans; D051379:Mice; D008854:Microscopy, Electron; D009206:Myocardium / Q000166:cytology; D009411:Nerve Endings / Q000166:cytology; D051381:Rats; D012104:Reptiles