Fig. 6. The brk promoter integrates inputs from multiple modules. Confocal images of wing discs (dorsal upwards, anterior leftwards) showing reporter-lacZ (red) and omb-Gal4>UAS-eGFP expression (green). The module number and organization (green oval represents activator, red the SMM complex) is depicted schematically. Discs in A-C were stained in parallel and visualized using identical settings. Graphs show signal intensity in the red and green channels, measured at the white bar. (A) A 1x/+ reporter containing a single copy of module-3 (L12) was expressed in the wing pouch region lateral to omb>GFP. (B) The 2x/+ and (C) 3x/+ reporter drive increasingly higher levels of expression, but showed no significant overlap with omb>GFP.