title: Ultrastructure and innervation of the teleostean atrium.
mesh_terms: D000109:Acetylcholine / Q000502:physiology; D000110:Acetylcholinesterase / Q000502:physiology; D000199:Actins / Q000502:physiology; D000818:Animals; D003593:Cytoplasm / Q000648:ultrastructure; D003896:Desmosomes / Q000648:ultrastructure; D004699:Endocardium / Q000648:ultrastructure; D005399:Fishes; D006325:Heart Atria / Q000294:innervation*; D006329:Heart Conduction System / Q000502:physiology; D008854:Microscopy, Electron; D009206:Myocardium / Q000648:ultrastructure*; D009210:Myofibrils / Q000648:ultrastructure; D012508:Sarcolemma / Q000648:ultrastructure; D012519:Sarcoplasmic Reticulum / Q000648:ultrastructure; D012583:Schwann Cells / Q000648:ultrastructure; D014630:Vagus Nerve / Q000502:physiology
chemical_list: D000199:Actins; D000110:Acetylcholinesterase; D000109:Acetylcholine