Expressed in a subset of neurons in the pharynx and in the extrapharyngeal nervous system. Expression was also noticed in intestine cells
(int1-
int9). In the pharynx,
eat-4 was found to be expressed in M3, NSM neurons, and possibly I5, but not in muscle. Clear and consistent
eat-4 reporter expression was found in 15 different anatomical types. ADA, ALM, ASH, ASK, AUA, and AVJ or AIN, AVM, FLP, IL1, LUA, OLL, OLQ, PLM, PVD, and PVR.