Expression of necdsRNA.S.Scer\UAS under the control of Scer\GAL4Act5C.PI gives a moderate nec mutant phenotype. Expression of necdsRNA.S.Scer\UAS under the control of Scer\GAL4ptc-559.1, Scer\GAL4VNC.ap, Scer\GAL4Dll-md23 or Scer\GAL4dpp.blk1 does not give a nec mutant phenotype.