Chemical Phenomena, Free Radicals, Protein Conformation, Iron, Tetrazolium Salts, Cytochrome c Group, Catalysis, Magnetics, Oxygen Consumption, Drug Stability, Species Specificity, Phagocytosis, Superoxides, Animals, Amino Acids, Inflammation, Manganese, Binding Sites, Bacteria, Superoxide Dismutase, Electron Spin Resonance Spectroscopy, Hydrogen-Ion Concentration, Biological Evolution, Molecular Weight, Oxygen, Isoenzymes, Kinetics, Chemistry, Zinc, Reperfusion Injury, Mutation, Cattle, Electrophoresis, Polyacrylamide Gel, Oxidation-Reduction, Copper, Protein Binding