title: Demonstration of adenosine triphosphatase activity in coated dense vesicles and membranes of specific granules in mammalian myocardium.
mesh_terms: D000251:Adenosine Triphosphatases / Q000032:analysis; D000818:Animals; D006168:Guinea Pigs; D006325:Heart Atria / Q000201:enzymology; D006651:Histocytochemistry; D008854:Microscopy, Electron; D009206:Myocardium / Q000166:cytology* / Q000201:enzymology; D010210:Papillary Muscles / Q000201:enzymology; D012519:Sarcoplasmic Reticulum / Q000201:enzymology*
chemical_list: D000251:Adenosine Triphosphatases