Expr4378
The C17E4.3::GFP reporter is expressed in the developing embryo and L1 larval stages, in three distinct sheath/socket cells in the head region close to the anterior bulb of the pharynx and several cells around the anus. Expression is also seen in several pharyngeal muscle cells. Dye filling tests confirmed that the processes extending to the nose were not from amphid neurons, but rather from socket cells.