The dynamics of hematopoiesis over the human lifespan.

Over a lifetime, hematopoietic stem cells (HSCs) adjust their lineage output to support age-aligned physiology. In model organisms, stereotypic waves of hematopoiesis have been observed corresponding to defined age-biased HSC hallmarks. However, how the properties of hematopoietic stem and progenitor cells change over the human lifespan remains unclear.

FACS and immunomagnetic isolation of early erythroid progenitor cells from mouse fetal liver.

Early erythroid progenitors are transit-amplifying cells with high proliferative capacity committed to undergoing red cell differentiation. CD71/CD24 progenitors are less mature and have greater proliferative capacity than CD71/CD24. We present protocols for isolation of CD71/CD24 progenitors from mouse fetal liver using both fluorescence-activated cell sorting (FACS) and immunomagnetic enrichment.