ddIs254 [ctbp-1::2xTY1::GFP:: FRT::3xFLAG + unc-119(+)]. Pick non-Unc to maintain. References: Sarov M, et al. Cell. 2012 Aug 17;150(4):855-66. Strain was constructed as part of the Regulatory Element Project, part of modENCODE (http://www.modencode.org)