title: CIRCADIAN RHYTHMICITY IN THE SENSITIVITY OF TWO STRAINS OF MICE TO WHOLE-BODY RADIATION.
abstract: When male mice of the Swiss-Webster and C(3)H strains are maintained on a light-dark cycle in which the light begins at 7 a.m. and ends at 7 p.m., they are more sensitive to whole body x-irradiation (800 to 900 roentgens) given at 2 a.m. than at any other time in the cycle tested.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D008027:Light; D008297:Male; D051379:Mice; D010507:Periodicity; D017440:Photoperiod; D011830:Radiation Effects; D012106:Research; D014916:Whole-Body Irradiation
keywords: DARKNESS; EXPERIMENTAL LAB STUDY; LIGHT; MICE; PERIODICITY; RADIATION EFFECTS