ltSi264 [bub-1p::bub-1(re-encoded)::RFP + Cbr-unc-119(+)] II. BUB-1::RFP has been re-coded to be knl-1(RNAi) resistant. Reference: Pelisch F, et al. Mol Cell. 2017 Jan 5;65(1):66-77. doi: 10.1016/j.molcel.2016.11.001. PMID: 27939944