Splenic CFU-E in mice were determined during stimulation and suppression of erythropoiesis by means of the methylcellulose culture system originally used for bone marrow CFU-E. It was found that under steady-state conditions the number of CFU-E in the spleen comprises less than 20% of the CFU-E in the total bone marrow mass. The number of CFU-E decreased with suppression and increased after stimulation of erythropoiesis. The response to exogenous Ep stimulation on day 10 posthy-poxia was more pronounced in the spleen than in the bone marrow (the number of CFU-E was 1.6 times greater in the spleen than in the total bone marrow mass) indicating the importance of the spleen in stimulated erythropoiesis in mice.

Keywords:
CFU-E, Late erythroid progenitors, Mouse spleen, Stimulation and suppression of erythropoiesis
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© 1984 S. Karger AG, Basel
1984
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