UAS regulatory sequences drive expression of an inverted repeat.
follicle cell, with Scer\GAL4Act5C.PI
larval tracheal system | embryonic stage 17, with Scer\GAL4btl.PS
20% of stage 17 embryos expressing crbJF02777 under the control of Scer\GAL4btl.PS show severe defects in the transition from luminal liquid-clearance to air-filled airways.