Drives expression in class 1 dendritic arborizing neurons.
drives expression in class I dendritic arborizing neurons starting at embryonic stage 17; while Scer\GAL498b
does not begin driving expression until the first larval instar.
drives expression in some neurons in the PNS including class I dendritic arborizing neurons (ddaD, ddaE and vdap) and in the longitudinal bipolar dendrite neurons (dbp). Labelling is also seen in a few cells in the brain and ventral nerve cord.