Quantification of hematopoietic stem and multipotential progenitor cells (HSPCs) by flow cytometry (LSK, Lin−Sca1+c-Kit+) or common myeloid progenitors (CMP) and granulocye/macrophage progenitors (GMP) from (A) the blood, (C) the spleen or (E) the liver of chow fed WT and Abca1−/−Abcg1−/− mice. Colony forming unit assays of multipotential progenitors and granulocyte macrophage progenitors (CFU-GEMM and CFU-GM, respectively) from (B) the blood, (D) the spleen, or (F) the liver of chow fed WT and Abca1−/−Abcg1−/− mice. Results are ± SEM of 6 animals per group. *P<0.05 vs. WT.