Kinetics of Cell Populations in the Intestinal Epithelium of Mice after Partial-body Irradiations with X-rays and Neutrons

Abstract
Female mice were given a single irradiation in the trunk region with either 200 kV X-rays at 26.2 rad/min or with beryllium-9 fast neutrous at 9.2 rad/min. Crypt cell counts were compared with unirradiated controls. A feedback term is derived for cell renewal, the radiation treated cells being greatly reduced in terms of cell number. A damped-oscillation type of recovery was shown for both crypt and villus cells as division delay was linked to mitosis inhibition by radiation.