[Modifying effect of deep hypoxia on neutron-irradiated mice]

Deep hypoxia was shown to influence the survival of animals, the state of the small intestine mucosa and the haemopoietic system. DMF (LD50/30) was 2.49 and 1.66 with X- and neutron radiation, respectively. As to haemopoietic stem cells X-irradiated in vivo, D0 was 0.96 +/- 0.04 Gy (control) and 2.82 +/- 0.14 Gy (anoxia). With neutron irradiation, D0 was 0.44 +/- 0.01 Gy and 0.8 +/- 0.03 for the control and experimental animals respectively.