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Fig. S3 Mosaic overexpression of Hh activity in the optic vesicle promotes temporal fate. (A-D′) Mosaic overexpression of Shh reproduces the phenotypes observed by using the Gal4/UAS system (compare to main figure 2). (E-G) Images of brains and eyes showing expression of the Shh target ptch2 is lost in a cyclopamine treated embryo (H) and overexpressed in a tg(rx3::Gal4);UAS:shh embryo, consistent with the expected alterations to Hh pathway activity under these conditions.
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