Left: Representative plots measuring percentage of CD138+ cells and summary graph for four independent experiments ( n = thirteen (control) and seven mice (for the respective genotypes)). Right: Graph summarizing percentage of IgG1+ cells in the same cultures. CD138+ and CSR values within each experiment were normalized to the average of control mice ( WT and Cd19 Cre/+ : Ctrl ), which was set to 100% (n = thirteen (control) and seven mice (for the respective genotypes)).