title: Nuclear magnetic resonance studies of metal porphyrins. I. Kinetics of ligand exchange and of transitions between high- and low-spin states in the system hemin-pyridine-water.
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D006418:Heme; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D008670:Metals; D009584:Nitrogen; D009942:Organometallic Compounds; D011166:Porphyrins; D011522:Protons; D011725:Pyridines; D012995:Solubility; D012997:Solvents; D014867:Water
chemical_list: D008670:Metals; D009942:Organometallic Compounds; D011166:Porphyrins; D011522:Protons; D011725:Pyridines; D012997:Solvents; D014867:Water; D006418:Heme; D009584:Nitrogen