title: The ultrastructure of the sinuatrial ring bundle and of the caudal extension of the sinus node in the right atrium of the rabbit heart.
mesh_terms: D000818:Animals; D001369:Axons; D003094:Collagen; D003896:Desmosomes; D006003:Glycogen; D006056:Golgi Apparatus; D006325:Heart Atria / Q000166:cytology; D002479:Inclusion Bodies; D007365:Intercellular Junctions; D008247:Lysosomes; D008854:Microscopy, Electron; D008870:Microtubules; D008931:Mitochondria, Muscle; D009206:Myocardium / Q000166:cytology*; D009210:Myofibrils; D010873:Pinocytosis; D011817:Rabbits; D012508:Sarcolemma; D012519:Sarcoplasmic Reticulum; D012849:Sinoatrial Node / Q000166:cytology*
chemical_list: D006003:Glycogen; D003094:Collagen