wdIs20 [unc-4p::snb-1::GFP + dpy-20(+)]. Animals are Lon, likely due to dpy-20(+) overexpression. Punctate GFP expression observed in dorsal nerve cord, ventral nerve cord, VC4, and VC5. Reference: Lickteig KM, et al. J Neurosci. 2001 Mar 15;21(6):2001-14.