bsIs2 [pie-1::GFP::spd-2 + unc-119(+)]. ruIs32 [pie-1p::GFP::H2B + unc-119(+)] III. Wild type animals express GFP marked DNA (GFP-H2b) and centrosomes (GFP-SPD-2) in germ line and embyros. Maintain at 24C to obtain optimal GFP expression.