Fig. 6. REPO and TTK69 cooperate to suppress neuronal development. The expression of the neuron-specific protein ELAV in stage 13 embryos. (A) Wild type. (B-E) Ectopic expression using the scabrous GAL4 driver. (B) Ectopic expression of GCM reduced the number of ELAV-expressing cells. Ectopic expression of REPO (C) or TTK69 (D) caused, respectively, little or a modest reduction in the number of ELAV-expressing cells. When REPO and TTK69 were co-expressed, they synergistically reduced the number of ELAV-positive cells (E). Anterior is leftwards.