Figure 1From: Differential effects of age on circulating and splenic leukocyte populations in C57BL/6 and BALB/c male miceEffects of age and strain on circulating (A) and splenic (B) CD19+ lymphocytes collected from male C57BL/6 and BALB/c mice up to 18 months of age. * Indicates strain differences within a particular age category (P < 0.05). a,b Indicates age differences within a particular strain (P < 0.05).Back to article page