Peripheral Leukocyte Infusion into Lethally Irradiated Guinea Pigs

Abstract
Homologous peripheral blood leukocytes were injected into lethally irradiated guinea pigs. Histologic examination of these showed a rapid recovery of the bone marrow and the lymphatic tissue following an injection of a sufficient number of leukocytes. All control animals died with a hypoplastic bone marrow. Protected animals did not develop "secondary" disease during 9 months of observation.