UASt regulatory sequences drive expression of the Ecol\hyg, which encodes a hygromycin B phosphotransferase and confers resistance to hygromycin.
chemical resistant | larval stage, with Scer\GAL4Act5C.PU
Addition of hygromycin to standard fly food (0.6 mg/ml final concentration) is observed to kill all control larvae but not those expressing Ecol\hygUAS.cLa driven by Scer\GAL4Act5C.PU.