syIs503 [15xUAS::Chrimson::GFP::let-858 3'UTR + unc-122p::GFP + 1kb DNA ladder (NEB)]. Red light-activated channelrhodopsin cGAL effector. Reference: Cao M, et al. Application of the red-shifted channel rhodopsin Chrimson for the Caenorhabditis elegans cGAL bipartite system. MicroPubl Biol. 2018 Aug 22;2018:10.17912/2JGW-FJ52. doi: 10.17912/2JGW-FJ52. PMID: 32550400.