Studies on the radioprotective effect of etiocholanolone.

One-hundred forty male mice of an inbred strain (C3H/St) were divided into four groups of thirty-five each and were given total body irradiation of 750 cGy. After X-irradiation, one group was given etiocholanolone alone, the other was given bone marrow alone, a third was given both of these. One group was used as a control and was given no treatment after irradiation.

Studies on splenic population size feedback control regulatory mechanisms.

In previous studies, experimental splenosis was produced in normal rodents and in animals following splenectomy. Splenosis was more in splenectomised than in normal animals. In the present study, in animals into whom splenic fragments were implanted subcutaneously, there were less peritoneal splenic growth areas than in controls.