Expression of Notch target genes, Cut (A and B), Wg (C and D), vgBE-lacZ (E and F) and E(spl)mβ–lacZ (G and H), in the third instar wing discs of wild type larvae, with (B, D, F and H) or without (A, C, E and G) Uif* overexpression. Genotypes are: (A and C) dpp-Gal4 UAS-GFP/+; (B and D) dpp-Gal4 UAS-GFP/UAS-Uif*; (E) dpp-Gal4 UAS-GFP/vgBE-lacZ; (F) dpp-Gal4 UAS-GFP/vgBE-lacZ UAS-Uif*; (G) E(spl)mβ–lacZ/+; dpp-Gal4 UAS-GFP/+ and (H) E(spl)mβ–lacZ/+; dpp-Gal4 UAS-GFP/UAS-Uif*. Arrows indicate a loss or a decreased expression of the Notch target genes at the AP boundary of the wing discs where Uif* was expressed under the control of dpp-Gal4 (B, D, F and H).