Confocal images of 3rd instar eye imaginal discs from wildtype control (GMR-Gal4) (A and C) and animals with GMR-Gal4-meidated co-overexpression of Co-Sd and Co-Yki (GMR>CoSd+CoYki) (B and D). Arrowheads mark the position of the morphogenetic furrow (MF), and all eye discs are oriented anterior to the left.
(A–B) eye imaginal discs showing Diap1 immunostaining (red). Note the elevated Diap1 expression posterior to the MF in GMR>CoSd+CoYki eye discs (compare B to A).
(C–D) eye imaginal discs showing Ex immunostaining (red). Note the elevated Ex expression posterior to the MF in GMR>CoSd+CoYki eye discs (compare D to C).