AWC is a set of two ciliated neurons with large, flattened, sheet-like endings that are
associated with the sheath cells of the amphid sensilla (figure 1). The cell bodies of AWC are
situated in the lateral ganglia and send processes into the ventral cord via the amphid
commissures. These turn anteriorly and run near the lateral surfaces of the cord. They then
enter the nerve ring which they then run right round adjacent to the posterior surface; finally
ending ventrally. The main synaptic output is to AIY (a), AIB (b) and AIA (c) which synapses
back to AWC reciprocally (d). AWC also has some synaptic input from ASE (*d) and ASI (*c). Occasional dark vesicles are seen at synapses (a).
Magnifications: (a) x 25500, (b-d) x 12750.
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