title: ESR and ENDOR studies of the pi cation radical of bacteriochlorophyll.
mesh_terms: D001429:Bacteriochlorophylls; D002734:Chlorophyll / Q000031:analogs & derivatives; D004578:Electron Spin Resonance Spectroscopy; D009682:Magnetic Resonance Spectroscopy; D010084:Oxidation-Reduction; D010777:Photochemistry; D010788:Photosynthesis
chemical_list: D001429:Bacteriochlorophylls; D002734:Chlorophyll