UASp regulatory sequences drive expression of a long 461bp inverted repeat targeting the exon specific to the fwe Lose-B isoform and the common 5' UTR of the Lose-A and Lose-B isoforms.
Knocking down the fwe lose-A and lose-B isoforms through expression of fwedsRNA.Scer\UAS.Lhp under the control of Scer\GAL4GMR.PF results in an almost complete reduction in the physiological peripheral photoreceptor cell death seen in control pupae.