Scer\GAL4hh-Gal4-mediated expression of l(2)gd1NIG.4713R (in the presence of Dcr-2Scer\UAS.cDa) in a l(2)gd1d7/+ background results in posterior compartment peripodial cells of the wing disc adopting a columnar shape and forming a continuation of the lateral part of the disc epithelium - i.e. a transformation of peripodial into disc cells. TEM analysis shows that posterior compartment cells contain a class of endosomes that are enlarged compared to normal cells, though normal sized multi-vesicular bodies are also present. Lysosomes are of normal size.