Rim staining was restricted to discrete puncta in synapse-rich regions of the nervous system including the nerve ring, the ventral nerve cord and the dorsal nerve cord. Localized Rim protein was observed in all larval stages.
MOD-1 is expressed in the AIA, AIB, AIY, AIZ and RID interneurons, as well as in a number of additional uni- dentified neurons in the head, ventral cord and tail. In addition, mod-1 is expressed in RIM and RIC interneurons.