Fig. 5. (A-D) Df(3R)Espl22 clones marked with increased GFP (bright green) and stained for hh-lacZ (red) in the background of UAS-gro(mutant) transgene expression using omb-Gal4; overexpressed Gro is visualized in the blue channel. (A'-D') green (GFP) and red (hh-lacZ) channels only. (A''-D'') red channel only (hh-lacZ). (A) UAS-grocdc2^- rescues the gro^- defect, as it does not allow hh-lacZ derepression in anterior clones (arrow). (B) UAS-groWD40 and C, D: UAS-groQ do not restore hh repression. The position of the AP boundary is indicated by a blue line. Anterior is towards the left and dorsal upwards.