jnSi12 [peel-1p::htas-1::mCherry::tbb-2 3'UTR + Cbr-unc-119(+)] II. ezIs2 [fkh-6::GFP + unc-119(+)] III. ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV. GFP expression in spermatheca. mCherry expression in germline nuclei. UX993 sperm have increased mCherry intensity compared to that of its parent strains. [NOTE: the ltIs37 [pie-1p::mCherry::his-58 + unc-119(+)] IV transgene was previously annotated as itIs37 in this strain. The correct name of the transgene is ltIs37 and not itIs37.]

ezIs2 [fkh-6::GFP + unc-119(+)]. ezIs2 was integrated with pPD95.69 (fkh-6 promoter and unc-54 3') and pMM106b (unc-119(+)). Worms are 100% non-Unc (the unc-119 background has been crossed out). GFP expression in adult hermaphrodite spermatheca is bright and weak staining is also observed in the proximal sheath cells. Weak GFP staining is also observed in Z1/Z4 cells in both sexes.