GFI1 and hereditary elliptocytosis: These included cells from HE-enriched (FACS-HE) populations from single and double Runx1 and Gfi1 reporter mice, non-HE endothelial cells (FACS-ENDO), and committed EMP (FACS_EMP) and LMP (FACS-LMP) hematopoietic progenitors (Fig. 1d and Extended Data Fig. 1a,b).