title: EPR studies on cytochrome oxidase at 20 degree K.
mesh_terms: D000818:Animals; D002417:Cattle; D004578:Electron Spin Resonance Spectroscopy; D003576:Electron Transport Complex IV; D009206:Myocardium; D010084:Oxidation-Reduction; D013053:Spectrophotometry; D013696:Temperature
chemical_list: D003576:Electron Transport Complex IV