As previously reported,
pitp-1 is expressed in many neurons. We observed a co-lo- calization of the GFP and mCherry fluorescence in the AQR, PQR, and URX neurons, as well as in the BAG O2-sensing neurons (the BAG neurons act reciprocally to the URX neurons and are activated at low O2 levels), indicating that
pitp-1 is co-expressed with
glb-5 in O2-sensing neurons.