UAS regulatory sequences drive expression of the extracellular and transmembrane domains of Dg (amino acid residues 1-898) and the intracellular domain of shg (amino acid residues 1351-1507).
Invaginations are seen within the follicle epithelium in cells expressing Dg::shgi.Scer\UAS under the control of Scer\GAL4GR1. The length of the apical-basal axis of these cells is reduced compared to wild-type controls.