UASt regulatory sequences drive expression of an inverted repeat.
egg chamber, with Scer\GAL4NP1624
epithelium, with Scer\GAL4NP1624
stalk follicle cell, with Scer\GAL4NP1624
Scer\GAL4tj-NP1624-mediated expression results in 'fused' egg chambers in which individual chambers are covered by an epithelium but not separated by a stalk.