Syntaxin was detected in the nervous system. Syntaxin immunoreactivity was very strong and distributed uniformly along the major process bundles: the nerve ring, ventral cord, and dorsal cord. Syntaxin was also detected in the pharyngeal nervous system. Furthermore, syntaxin was detected outside the nervous system. Immunoreactivity was strong in the uv1
cells of the vulva, in the intestine, and in the spermatheca. Detectable levels of syntaxin protein were not observed in other tissues.