Immature erythroblasts with extensive ex vivo self-renewal capacity emerge from the early mammalian fetus.

Abstract excerpt

In the hematopoietic hierarchy, only stem cells are thought to be capable of long-term self-renewal. Erythroid progenitors derived from fetal or adult mammalian hematopoietic tissues are capable of short-term, or restricted (10(2)- to 10(5)-fold), ex vivo expansion in the presence of erythropoietin, stem cell factor, and dexamethasone. Here, we report that primary erythroid precursors derived from early mouse...

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