Key points are not available for this paper at this time.
H. R. Withers, N. Hunter, H. T. Barkley, Jr., B. O. Reid, Radiation Survival and Regeneration Characteristics of Spermatogenic Stem Cells of Mouse Testis, Radiation Research, Vol. 57, No. 1 (Jan., 1974), pp. 88-103
Withers et al. (Tue,) studied this question.