Figure 2. Metabolic phenotypes of B cells. (A) Graphs show mean fluorescent intensity (MFI) of stains for the indicated markers in or on different B cell subsets, i.e., naïve B cells (IgD+CD19+CD27-CD38-), unswitched memory B cells (IgD+CD19+CD27+CD38-), switched memory B cells (IgD-CD20+CD19+CD38+CD27-) and ASCs (IgD-CD20-CD19+CD38+CD27+) of younger (open circles) or aged (grey squares) individuals. Graphs show results for individual samples with means. Statistical difference indicated with lines and stars above as in legend to