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Autonomous and non-autonomous signals control otu expression in female germ cells. Percentage of stage 17 embryos exhibiting strong (solid bars) medium (shaded bars) or weak (hatched bars) otu in situ hybridization signal. Genotype of embryos is as indicated (see Materials and methods) and includes srp-, tra-, UAS-tra expressed with tubulin-Gal4, and UAS-upd expressed with nanos-Gal4.
