rg444 is an endogenous genomic CRISPR/Cas9 knock in of YFP fused to the C-terminus of the EGL-2 K+ Channel in N2 background. Faint YFP fluorescent puncta can be detected on muscle membranes and neural cell bodies and processes at high power magnification in all stages. Him. Reference: Goncalves J, et al. iScience 2020 Mar 19;23(4):100990. PMID: 32240955