UAS regulatory sequences drive expression of obst-A.
obst-AUAS.cPa/Scer\GAL4btl.PS rescues obst-Aunspecified
The chitin degradation defects of stage 16 obst-Aunspecified embryos are rescued by expression of obst-AScer\UAS.cPa under the control of Scer\GAL4btl.PS.