ZBTB18BWT or ZBTB18BKO mice were injected intravenously with 50 mg/kg EdU 1 h before sacrifice on day 14 post NP-KLH immunization. Summary data of EdU+% in ZBTB18BWT or ZBTB18BKOGCMP cells are shown. Each symbol indicates one mouse, and lines denote means. One of two independent experiments with similar results is shown. All p values by t tests,*p < 0.05,**p < 0.01,***p < 0.001; ns, non-significant.