vrIs79 [pie-1p::GFP::prg-1 + unc-119(+)]. Transgene expresses GFP::PRG-1 protein fusion. Weak GFP expression prone to silencing. Maintain stocks at 25C to retain GFP expression. Reference: Wang G, Reinke V. Curr Biol. 2008 Jun 24;18(12):861-7.