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B cells from aged mice regulate surface marker expression similar to those from young mice. SPC from young and aged QM mice were harvested and cultured with LPS or anti-CD40 with IL-4 for 48 hours. Splenocytes were stained for expression of cell surface markers. Lymphocytes were gated on FSC/SSC and B cells on B220+. Data are representative of 4 separate experiments.
