White and red spleen pulp recovery in mice after continuous irradiation.

The process of spleen recovery after the continuous irradiation with higher daily doses up to the total dose 9570 mGy was studied in histological slices. Histological picture seen immediately after the irradiation gives evidence that significant changes occur in spleen white and red pulp. The lymphopoiesis recovery is slow and lasts till day 60, resp. 90 after irradiation. Erythropoiesis and myelopoiesis recovery of the red pulp is more intensive and is completed within 14-28 days in all three examined groups.