A 4.5kb genomic fragment from the dl 5' flanking region drives expression of wild-type full-length dl which is tagged at the C-terminal end with the Tag:nt1 epitope. The Hsp70 polyadenylation signal is also present.
dlT:boss-NT1 rescues the ventral denticle belts and Filzkorper and partially restores the head skeleton in embryos derived from dl1 females. However, the head is abnormal and hatching is not seen.