cbfb acts downstream of the Notch pathway.cbfb expression in the hematopoietic progenitors in the ventral DA was detectable in control siblings (A-A′), but not in the mind bomb mutant (B-B′), at 36 hpf. The expression of c-myb and runx1 was expanded in the DA and the axial vein of heat-shocked hsp70:gal4;uas:NICD embryos at 36 hpf (C-F′). Similarly, cbfb expression was expanded in the heat-shocked hsp70:gal4;uas:NICD embryos when compared with WT embryos (G-H′) at 36 hpf. Panels A′-H′ depict the boxed regions in panels A-H.