lucEx818 [tbx-31::GFP(fosmid) + ttx-3p::mCherry]. Pick mCherry+ animals to maintain. Wild-type morphology. Extrachromosomal TBX-31 direct fusion fosmid-based reporter. Reference: Charest J, et al. Dev Cell. 2020 Sep 24;S1534-5807(20)30672-9. PMID: 33002421