title: Fine structure of the bundle-branches.
mesh_terms: D000818:Animals; D003094:Collagen; D003896:Desmosomes; D004285:Dogs; D004594:Electrophysiology; D006329:Heart Conduction System / Q000166:cytology* / Q000502:physiology; D006801:Humans; D007365:Intercellular Junctions; D008854:Microscopy, Electron; D008928:Mitochondria; D009206:Myocardium / Q000166:cytology; D009210:Myofibrils; D013045:Species Specificity
chemical_list: D003094:Collagen