When the
sin-3 expression profile was examined in transgenic animals using a gfp reporter driven by a 1.5 kb
sin-3 5'-flanking sequence, the
sin-3::gfp signal was detected in all the ray structural cells. In addition,
sin-3::gfp expression was observed in the inner labial neurons, socket cells, the cephalic neurons in the head region and the ventral nerve cord from L1 to adult stage.