Pharyngeal muscles and HSN stain only with KP#14. Expression neurons include: sensory neurons ALM, AVM, IL1, OLQ, OLL, PHA, PVD, and PVM; motor neurons SMD, HSN, RIM, RMD and RMG; interneurons BDU, CAN, RID, PVC, and SIA; and the pharyngeal neuron NSM. The head mesodermal cell and the spermathecae also express
goa-1.