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Fig. 4. The competence to specify bracts is temporally restricted. hsp70-GAL4/UAS-Raf * pupae heat shocked for 30 minutes, 37°C at 0-4 (A), 4-8 (B) or 8-12 (C) hours APF. Note that in B, the patches of bracts do not appear close to the bristles. (D) Notch activation represses the specification of bracts. hsp70-GAL4/UAS-Nintra pupae heat shocked for 30 minutes, 37°C at 8-12 hours APF. All bracts are missing.





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