
Fig. 3. dppblk-GAL4 controls expression along the posterior-lateral margins of the developing eye imaginal disc. (A,B) dppblk-GAL4/UAS-lacZ. (C) dppblk-GAL4/UAS-Egfr[act]/UAS-lacZ. (A) L2 eye-antennal imaginal disc. (B,C) L3 eye-antennal imaginal disc. Anterior is towards the right; F-actin is in red; lacZ in green. lacZ levels are elevated along the dorsal and ventral margins are sites of ectopic furrow initiation.