UASt regulatory sequences drive expression of an inverted repeat.
Expression under the control of Scer\GAL4Mef2.PR results in late larval lethality.
Expression under the control of Scer\GAL4Mef2.PR results in missing larval body wall muscles.
Expression under the control of Scer\GAL4Mef2.PR results in sarcomeres with reduced Z-lines in the larval body wall muscles.
Expression under the control of Scer\GAL4pnr-MD237 results in lethality (either before or at the pupal stage), depending on the insertion line used.