title: Chain reactions and radiosensitization: model enzyme studies.
abstract: The influence of persulphate ions on the radiosensitivity of dilute aqueous solutions of ribonuclease and lysozyme has been studied under a variety of conditions. Rate-constants for reactions of the sulphate radical, SO4, with a variety of solutes and transient product spectra of some of these reactions are reported. The presence of persulphate ions in general enhances the radiation sensitivity; in nitrous-oxide-saturated persulphate solution, a chain reaction has been demonstrated.
mesh_terms: D003037:Cobalt Radioisotopes; D004583:Electrons; D005720:Gamma Rays; D009113:Muramidase / Q000528:radiation effects*; D010084:Oxidation-Reduction; D011830:Radiation Effects; D012260:Ribonucleases / Q000528:radiation effects*; D012996:Solutions; D013431:Sulfates; D014867:Water
chemical_list: D003037:Cobalt Radioisotopes; D012996:Solutions; D013431:Sulfates; D014867:Water; D012260:Ribonucleases; D009113:Muramidase