Ultrastructure of cardiac muscle and nerve contiguities.
D000818:Animals; D001001:Anura; D006321:Heart / Q000294:innervation*; D006352:Heart Ventricles / Q000166:cytology; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D009206:Myocardium / Q000166:cytology*; D009411:Nerve Endings / Q000166:cytology*; D009469:Neuromuscular Junction / Q000166:cytology*