P{PdL} insertion upstream of the transcription initiation site, in the same 5'-3' orientation as the direction of transcription of ush.
egg chorion | drug conditional, with Tn10\tetRrtTA.Act5C
Females expressing ush3-38 under the control of Tn10\tetRAct5C.T:Hsim\VP16 in the presence of doxycycline produce eggs with thin shells and short dorsal appendages.