title: THE IMPORTANCE OF SULFUR IN BIOLOGICAL SYSTEMS AS DETERMINED BY ESR STUDIES.
mesh_terms: D001669:Biochemical Phenomena; D001671:Biochemistry; D002623:Chemistry Techniques, Analytical; D004578:Electron Spin Resonance Spectroscopy; D013455:Sulfur
chemical_list: D013455:Sulfur
keywords: BIOCHEMISTRY; CHEMISTRY, ANALYTICAL; ELECTRON SPIN RESONANCE; SULFUR