title: The state and function of copper in biological systems.
mesh_terms: D001205:Ascorbic Acid; D002384:Catalysis; D004156:Catechol Oxidase; D002570:Ceruloplasmin; D055598:Chemical Phenomena; D002621:Chemistry; D002942:Circular Dichroism; D003300:Copper; D004578:Electron Spin Resonance Spectroscopy; D003576:Electron Transport Complex IV; D004583:Electrons; D007477:Ions; D007700:Kinetics; D009905:Optical Rotatory Dispersion; D010084:Oxidation-Reduction; D010940:Plant Proteins; D013057:Spectrum Analysis
chemical_list: D007477:Ions; D010940:Plant Proteins; D003300:Copper; D004156:Catechol Oxidase; D002570:Ceruloplasmin; D003576:Electron Transport Complex IV; D001205:Ascorbic Acid