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Fig. 5. The Ds and Fj gradients do not provide essential directional cues in the wing. (A-D) Schematics showing the orientation of wing hairs in adult flies. Relevant changes from wild type with regard to Fj and Ds function or expression are indicated at the bottom of each panel. Images are drawn to scale. (E-H) Micrographs showing the region between veins 3 and 4, and just distal to the anterior crossvein. The genotypes shown are: (A,E) w1118; (B,F) w1118; ds38k, fjN7/dsUA071, fjd1; (C,G) w1118; ds38k, fjN7/dsUA071, fjd1; TubP-Gal4, UAS-Ds/UAS-Fj; (D,H) w1118; ds38k, fjN7/dsUA071, fjd1; TubP-Gal4/UAS-Ds.





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