Scer\GAL4ppk28.PC drives expression in a single chemosensory neuron of adult labral sensillum 7.
Scer\GAL4ppk28.PC labels the water-sensing neurons (W cell) of the taste bristles of the proboscis. Gustatory receptor neurons labeled with Scer\GAL4ppk28.PC do not overlap with expression of Avic\GFPGr66a.3x.IRES.2x or Avic\GFPGr5a.3x.IRES.2x in the proboscis, which label the bitter and sugar-sensitive neurons, respectively. The projection of the neurons labeled with Scer\GAL4ppk28.PC enter the subesophageal ganglion via the labellar nerve and the labial nerve. In the former nerve there is some overlap with projections labeled with Avic\GFPGr5a.3x.IRES.2x. Almost all cells labeled with Scer\GAL4ppk28.PC are also labeled by the expression of ppk28 transcript. Most taste bristles that express Scer\GAL4ppk28.PC are labeled by Scer\GAL4NP1017.