UASp regulatory sequences drive expression of 21bp from immediately upstream of the endos coding region, followed by the endos coding region.
endosUASp.cVSa/Scer\GAL4VP16.nanos.UTR rescues endos00003
Expression of endosScer\UAS.P\T.cVSa under the control of Scer\GAL4nos.UTR.T:Hsim\VP16 rescues the oocyte and fertility defects of endos00003 females.