title: Biological effects of radiation-induced free radicals in fern spores.
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D009569:Nitric Oxide; D009584:Nitrogen; D010100:Oxygen; D011830:Radiation Effects; D013170:Spores / Q000528:radiation effects*
chemical_list: D009569:Nitric Oxide; D009584:Nitrogen; D010100:Oxygen