Eight COE motifs in A4e were mutated in endogenously-tagged cfi-1(kas16[mNG::AID::cfi-1]). Expression of cfi-1::mNG::AID is down-regulated in late larval stages and adults. Reference: Li Y, et al. Elife. 2020 Oct 1;9:e59464. doi: 10.7554/eLife.59464. PMID: 33001031.