An AIDCreERT2xR26eYFP mouse was i.p. injected with tamoxifen at day 0. YFP+ plasma cells from the small intestine were FACS sorted using the FACSAria Fusion (BD) equipped with a 70 mm Nozzle and B cell receptor library was prepared. Sequencing was performed on the Illumina Miseq using the v3 Reagent Kit.