UAS regulates expression of Cdk4.
Cdk4UAS.cUa, CycDUAS.cUa, Scer\GAL4Cg.PA has increased cell size phenotype
Scer\GAL4Cg.PA Cdk4Scer\UAS.cUa CycDScer\UAS.cUa animals have wings of normal size that contain abnormally large cells.