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Rescue of DT in double mutants by DWnt proteins. Lateral views of embryos at late stages of embryogenesis stained with mAb2A12 to show the trachea. Each image shows a wg−DWnt2− double mutant in which the DWnt indicated has been added in the pattern of the Gal4 line used. Note the rescue of DT (arrows) when wg, DWnt2, or DWnt8 are added to the embryo (A–F). Conversely, DWnt5 does not rescue the DT (G and H); the arrowhead in H points to a piece of the VB.
