Drives expression in follicle cells from oogenesis stage S9.
Expression during embryogenesis has not yet been described. However, when used to drive expression of UAS constructs that are usually lethal when expressed in embryos, animals can be recovered. This suggests there is little or no embryonic expression.
During oogenesis, from stage S9, expressed in all follicle cells situated over the entire oocyte.
Expression in the lymph gland is uniform.