A 12.6kb genomic fragment which flanks the insertion site of the P{GawB} element in the P{GawB}GH146 insertion has been cloned inserted into a transgenic construct upstream of the GAL4 coding region.
The reporter labels a single projection neuron born soon after larval hatching, which in wild-type animals, always projects its dendrites to the dorsolateral glomerulus DL1 in the posterior of the antennal lobe.