The cellular composition of individual hemopoietic spleen colonies has been studied using
techniques which tested primarily for cell function rather than cell morphology. Erythroblastic …

The progressive growth and development of spleen colonies was studied in heavily
irradiated host mice in which erythropoiesis was modified by various procedures …

A variety of erythropoietic stimuli influenced the number of endogenous spleen colonies in
irradiated mice and the number of transplantable colony forming cells in the spleen and …

Spleen colonies produced by sublethally irradiated mouse bone marrow cells were
compared to those produced by unirradiated marrow cells in lethally irradiated mice …

Histologic examination of the spleens in RFM/Un mice killed 6 to 9 days after 350 to 800 R
whole‐body x‐irradiation revealed hemopoietic colonies, the numbers of which decreased …

When Friend virus‐induced leukemic cell lines were injected into irradiated hosts after the
second radiation dose, the colony‐forming unit (CFU) in the recipient spleens per 104 cells …

The survival of colony‐forming cells in organ cultures of the mouse embryonal liver was
studied. During cultivation colony‐forming cells acquire the type of regulation characteristic …