Restricted Hematopoietic Progenitors and Erythropoiesis Require SCF from Leptin Receptor+ Niche Cells in the Bone Marrow

？ c-kit +-restricted progenitors in bone marrow require SCF from leptin receptor + cells ？ c-kit +-restricted progenitors in bone marrow do not require SCF from endothelial cells ？ Erythropoiesis in bone marrow requires SCF from leptin receptor + niche cells ？ Early erythroid progenitors localize adjacent to perisinusoidal leptin receptor + cell