Expression of the
smp-2::gfp transcriptional reporter is detected initially in twofold embryos, in one mononucleate pharyngeal muscle cell and in intestinal cells. In the L1 stage, GFP fluorescence is observed in one mononucleate pharyngeal muscle cell
m6, in all intestinal cells, in the head epidermal cells, in a restricted number of body wall muscles, in inner labial sensory neurons, and tentatively in URAVL/R and URADL/R motorneurons. In L4 larvae and adults, GFP fluorescence is restricted to intestinal cells and pharyngeal muscle cell
m6. During larval development of the male tail, GFP expression is observed only in the hook. In adult males, rays 8 and 9, and the tail bursa express
smp-2::gfp.
smp-2::gfp is not seen in hyp 9 or hyp 10.