title: Free radicals produced in a rigid solution of typtophan by a biphotonic process.
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D008956:Models, Chemical; D011854:Radiochemistry; D014364:Tryptophan / Q000528:radiation effects*; D014466:Ultraviolet Rays
chemical_list: D005609:Free Radicals; D014364:Tryptophan