Mutant clones of lace2 (A, C) or ACC1 (B, D) were induced using sd-GAL4; UAS-FLP, and examined for tissue overgrowth in the absence (A, B) or presence (C, D) of a constitutively activated form of Armadillo (armS10), expressed using a UAS-armS10 transgene. For each image pair, panel i shows tissue growth patterns as revealed by Phalloidin (red in A–D), the mutant clone marker (green indicates non-mutant cells in A, B), or armS10 expression (blue in C, D), with the Phalloidin signal alone shown in panel ii. Complete genotypes are listed in Supplemental Table S4. Note that tissue overgrowth in the wing hinge region was not suppressed (C, D) because armS10 is not expressed in the hinge at this stage. Scale bars, 50 µm.