3.3kb EcoRI fragment of the ct regulatory region is fused upstream of a minimal Hsp70 promoter followed by lacZ reporter sequence.
A 3.3 kb EcoRI fragment of the ctregulatory region fused to a minimal Hsp70 promoter drives EcollacZexpression in the embryonic central nervous system, as well as in theventral ganglion and optic lobe of the larva.