Figure 2. Changes in subpopulations of B cells in different compartments.

A) Gating strategy for the identification of transitional T1 (IgM^high IgD^low), T2 (IgD^high IgM^high), naïve B cells (IgD^{intermdiate (int)} IgM^low) and switched B cells (IgM⁻IgD⁻) on CD19⁺ B cells. B) Numbers of the different subpopulations of B cells were determined by flow cytometry following a primary and secondary infection of Plasmodium chabaudi chabaudi (AS). The values and error bars shown are the means and the standard errors of the mean (SEM) of 5 to 7 mice.