hematopoietic system
• there is a 45% reduction in the number of long-term HSC in whole bone marrow cells based on the ability to generate multilineage engraftment after serial transplantation in irradiated hosts
• similar results are observed when fractions of bone marrow cells enriched in stem cells are used in serial transplantation of irradiated hosts
• multilineage engraftment in the primary bone marrow transplant is the same when mutant or wild-type mice are the donors, indicating short term HSC cells are unaffected
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