mNG::
mls-2 knock-in animals displayed wild-type AWC asymmetry as determined by the expression of the AWCON marker
str-2p::TagRFP, suggesting that mNG::MLS-2 fusion protein is functional in AWC development. Like GFP::MLS-2 expressed from transgenes, mNG::MLS-2 knock-in was localized in the nucleus of AWC precursor cells in early embryos but was not observed in AWC cells in late embryos or early-stage larvae. Similar to MLS-2 antibody staining and GFP::MLS-2 transgenes (Jiang et al., 2005), mNG::MLS-2 knock-in was localized to the nucleus of a subset of head cells and the M mesoblast in first-stage larvae and adults.