title: The effect of freezing on the viability of rat heart muscle as measured by cytochrome oxidase activity.
mesh_terms: D000818:Animals; D003576:Electron Transport Complex IV / Q000032:analysis*; D005615:Freezing; D008722:Methods; D009206:Myocardium / Q000201:enzymology*; D009336:Necrosis; D051381:Rats; D013053:Spectrophotometry; D014021:Tissue Preservation
chemical_list: D003576:Electron Transport Complex IV