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Title: Amount of mobilizable stem cells in perturbed hemopoiesis

Journal Article · · Int. J. Cell Cloning; (United States)

The level of mobilizable 9-day colony-forming units (CFU-s), which represents a constant fraction of the normal mouse bone marrow CFU-s pool, was assayed in BDF1 mice with perturbed hemopoiesis (i.e., during increased turnover of CFU-s or increased CFU-s traffic after irradiation). After low-level irradiation, regeneration of the mobilizable CFU-s fraction was significantly slower than that of bone marrow CFU-s. Depletion of the mobilizable CFU-s pool was observed if a permanently increased outflow of CFU-s from the bone marrow was induced by endotoxin injection. After 40% withdrawal of the blood volume, the mobilizable CFU-s pool expanded marginally. Assuming that the level of mobilizable CFU-s is a consequence of production and outflow from the bone marrow compartment, changes in the pool size of mobilizable CFU-s may be a sensitive indicator of balanced or unbalanced hemopoiesis.

Research Organization:
Frederic Joliot-Curie National Research Institute for Radiobiology and Radiohygiene, Budapest, Hungary
OSTI ID:
5217704
Journal Information:
Int. J. Cell Cloning; (United States), Vol. 3
Country of Publication:
United States
Language:
English