sec-5(xn51 [sec-5::zf1::YFP + LoxP::unc-119::LoxP]) II. Knock-in of zf1::yfp and unc-119(+) into the sec-5 locus. Expresses SEC-5::ZF1::YFP maternally and zygotically. Expression in many cells, including early embryos, epithelial cells, excretory cell, and germ line. unc-119 is present in reverse orientation within an intron of YFP. Reference: Armenti ST, et al. Development 2014 (in press).