Expression of the apoptosis markers activated caspase-3 (Cas3*) and activated Dcp-1 in control eye discs.

(a, a’) optix>GFP primordium stained for GFP, the photoreceptor marker Elav and Cas3*. The expression of the optix-GAL4 driver, as detected by GFP-expression is outlined (in a’). The Cas3* signal is low (a’). (b, b’) optix>+ primordium stained for the G2-marker Cyclin B (CycB) and Dcp-1. Dcp-1 signal is detected in a band of cells anterior to the differentiating wavefront (this latter lacks CycB expression).

(PDF)