Fig. 7. Early-induced borr mutant clones cause non-autonomous defects. (A-C) Adult wings (A) without or (B,C) with borr mutant clones; (C) enlargement of wing nick in B, with twin spot (marked with ck) outlined in white. (D-G) Third instar wing discs (D) without or (E-G) with borr mutant clones (marked by absence of GFP in F), stained with antibody against Wg; (F,G) magnifications of the boxed region in E. Red arrows indicate giant borr mutant cell expressing Wg, blue arrows indicate Wg expansion in wild-type cells that are not associated with a borr mutant clone. (H-M) Marginal regions of wing discs with borr mutant clones, stained as indicated; (LA) arrow indicates cell rearrangement that may have resulted from a dying borr mutant clone.