title: Photosensitization of xanthine-containing substances: electron spin resonance studies.
mesh_terms: D002099:Cacao; D003069:Coffee; D004578:Electron Spin Resonance Spectroscopy; D010787:Photosensitivity Disorders; D013662:Tea; D014970:Xanthines
chemical_list: D003069:Coffee; D013662:Tea; D014970:Xanthines