Fig. 5. scb^- clones alter the width or course of wing veins. scb¹ clones were generated using FLP/FRT mediated recombination and scored by the marker pawn. (A) Large clones generate blistered wings, a phenotype characteristic of other integrin^- mutants. (B) Two scb¹ clones adjacent to veins L2 and L3 result in broadening of the adjacent veins (regions between arrows indicate affected sections of veins), which comprise wild-type cells. (C) A high magnification view of two scb¹ dorsal clones surrounding the L3 vein, which are associated with a thickened vein segment (four cells wide). (D) A dorsal scb¹ clone located in the center of the L3 provein region divides the vein into two branches, which avoid the clone (arrows). (E) A wing containing several scb¹ clones in the proximity of L3. A ventral clone running over the vein has no effect. (F) A dorsal scb¹ clone generated in a sog^EP11 background lying inside the provein domain splits the L2 vein into two well defined branches. Arrows indicate veins formed outside the clonal boundary (indicated by broken red lines).