title: Letter: Effects of metal ions on the formation of radicals and chain breaks in ultraviolet-radiated polyadenylic acid and collagen.
mesh_terms: D003094:Collagen / Q000528:radiation effects*; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D007842:Lathyrism / Q000473:pathology; D008670:Metals / Q000494:pharmacology*; D011061:Poly A / Q000528:radiation effects*; D011837:Radiation-Protective Agents / Q000494:pharmacology*; D014466:Ultraviolet Rays
chemical_list: D005609:Free Radicals; D008670:Metals; D011837:Radiation-Protective Agents; D011061:Poly A; D003094:Collagen