title: Spin labeling of vitamin B 12.
mesh_terms: D000577:Amides; D055598:Chemical Phenomena; D002621:Chemistry; D003035:Cobalt; D003497:Cyclic N-Oxides; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D008027:Light; D008722:Methods; D010880:Piperidines; D011830:Radiation Effects; D013053:Spectrophotometry; D014466:Ultraviolet Rays; D014805:Vitamin B 12 / Q000528:radiation effects
chemical_list: D000577:Amides; D003497:Cyclic N-Oxides; D005609:Free Radicals; D010880:Piperidines; D003035:Cobalt; D014805:Vitamin B 12