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Fig. 7. The effects of overexpressing Fz, Fz2 and Arr on extracellular Wg distribution. Extracellular Wg staining in discs overexpressing Fz (A,A'), Fz2 (B,B') and Arr-GFP (C,C') in the posterior compartment. The posterior compartments are marked by GFP. The images and plot profiles are displayed as in Fig. 6.