Three copies of the grh-binding element 1 (GBE1) (FBrf0098901) followed by the DCRE (Dll conserved regulatory element) are fused upstream of lacZ.
EcollacZ3xGBE1.DCRE is not expressed in slp2-positive cells of the abdominal epidermis, unlike its parent construct EcollacZ3xGBE1.