mNeonGreen::3xFLAG::AID was inserted at the C-terminus of the endogenous lin-39 locus by CRISPR. Endogenous lin-39 expression marked by mNG. LIN-39 protein can be degraded by Auxin application with expression of TIR-1 protein. Reference: Feng W, et al. Elife. 2020 Jan 3;9. pii: e50065. doi: 10.7554/eLife.50065.