title: Fine structural studies of the sino-auricular nodal tissue in the heart of a teleost fish, Misgurnus, with particular reference to the cardiac internuncial cell.
mesh_terms: D000818:Animals; D001369:Axons; D003593:Cytoplasm; D005399:Fishes / Q000033:anatomy & histology*; D006056:Golgi Apparatus; D006352:Heart Ventricles / Q000166:cytology / Q000294:innervation; D006654:Histology, Comparative; D006801:Humans; D008928:Mitochondria; D009206:Myocardium / Q000166:cytology*; D009210:Myofibrils; D012583:Schwann Cells; D012849:Sinoatrial Node / Q000166:cytology* / Q000294:innervation