UASt regulatory sequences drive expression of wild-type ru.
Scer\GAL4tin.CΔ4/ruUAS.cYa rescues Df(3L)ED4238/+
Scer\GAL4tin.CΔ4/ruUAS.cYa rescues ru1
Expression of ruScer\UAS.cYa driven by Scer\GAL4tin.CΔ4 rescues the abnormal enlarged cardiac phenotype of ru1 homozygotes and Df(3L)ED4238/+ heterozygotes.