ceh-20 reporter gene construct is expressed in the PDE neurons throughout their life. ceh-20 is expressed in a few neurons in the head, mostly in the second pharyngeal bulb area, including the ADE neurons. Coexpression of ast-1, ceh-43, and ceh-20 was detected in at least one nondopaminergic neuron (SDQL).
Expression of gcy-35 was consistently observed in URX, AQR, and PQR sensory neurons; gcy-35 expression was also observed in ALN, SDQ and BDU neurons and variably in AVM, PLM and PLN neurons, pharyngeal and body wall muscles, and the excretory cell.
ceh-36::gfp was broadly expressed during early embryonic development. ceh-36 expression became restricted to the AWC and ASE chemosensory neuron nuclei during late embryonic stages and was maintained through the adult stage. ceh-36::gfp expression was observed in both the ASEL and ASER neurons.