title: Addition of neutron and gamma-ray fractions for intestinal damage.
abstract: The microcolony assay technique has been used to test the validty of summing equivalent doses per fraction of 14 MeV neutrons and gamma rays for mouse intestinal damage. For a 4-daily fraction schedule, in which the first one or two fractions are given as neutrons and the remainder as gamma rays, combined dose fractions calculated from a 4-fraction schedule of either radiation type alone produce the same level of damage within the limits of accuracy of the experiment.
mesh_terms: D000818:Animals; D002470:Cell Survival / Q000528:radiation effects; D004307:Dose-Response Relationship, Radiation; D004735:Energy Transfer; D005260:Female; D005720:Gamma Rays; D007422:Intestines / Q000528:radiation effects*; D051379:Mice; D008815:Mice, Inbred Strains; D009502:Neutrons