Pick Rollers to maintain. Endogenous N-term tagged DPFF-1 with mNG::AID using the self-excising cassette for drug selection. Animals are rollers which contains sqt-1 gene. Remove the SEC for normal expression using the protocol described in "Dickinson DJ, Pani AM, Heppert JK, Higgins CD, Goldstein B. Streamlined Genome Engineering with a Self-Excising Drug Selection Cassette. Genetics. 2015 Aug;200(4):1035-49. doi: 10.1534/genetics.115.178335. Epub 2015 Jun 3. PMID: 26044593; PMCID: PMC4574250."