ccIs4655 [pes-10::GFP + dpy-20(+) ]. GFP expression in lineages with active HLH-8/HLH-2 (e.g., sex muscle, head mesodermal cell). Transgene contains pes-10::GFP reporter driven by 8 copies of an HLH-8/HLH-2 response site from the ceh-24 promoter.