Comparative radiosensitivity of CFUs of the mouse bone marrow and embryonal liver forming 7- and 11-day colonies

The authors studied the radiosensitivity of CFU-s, forming 7- and 11-day colonies from fetal liver (FL) of 14 and 17 day gestation and bone marrow (BM) of adult mice. The index of D0 for 7-day colonies, formed by CFU-s from 14-day, 17-day FL and BM was 2.02; 1.57 and 0.78 Gy, accordingly. 11-day CFU-s both from FL, and from BM did not distinguish statistically at their radiosensitivity (their D0 was 1.25 Gy).