The analysis of transgenic lines showed GFP fluorescence throughout their lifespan, which agrees well with previously published transcriptomic data (Golden et al., 2008; Grün et al., 2014). We found that
kin-9p(2.1 kb)::GFP adults exhibited fluorescence in the pharynx, intestine, and certain cells located in the tail. While
kin-9p(4.3 kb)::GFP animals exhibited a similar pattern, interestingly, no fluorescence was observed in the posterior region. It is possible that the longer fragment has certain inhibitory sequences that contribute to differences in expression.