The Effects of Fast Neutrons and X Rays on the Subependymal Layer of the Rat Brain

Some effects of irradiation of rat brain with single doses of x rays or fast neutrons have been measured. This was done by estimating the total number of cells in the subependymal layer at various times after irradiation. The gross response to x rays and neutrons was somewhat different, and the results suggest that the two histologically distinguishable cell types in the subependymal layer have different values of RBE.