cp13[nmy-2::gfp + LoxP] I. GFP inserted into the endogenous nmy-2 gene by Cas9-triggered homologous recombination. Green fluorescence in many tissues, especially the germline. Fluorescence is similar to, but brighter than, the nmy-2::GFP transgene zuIs45. Reference: Dickinson DJ, et al. 2013 Nature Methods Advance Online Publication. DOI: 10.1038/nmeth.2641.