title: A new biological index of radiosensitivity of individual mice in a closed colony.
mesh_terms: D000818:Animals; D006799:Housing, Animal; D008297:Male; D051379:Mice; D009929:Organ Size; D011830:Radiation Effects; D013154:Spleen / Q000166:cytology / Q000528:radiation effects*; D013737:Testis / Q000033:anatomy & histology / Q000528:radiation effects*