Pro- and anti-inflammatory cytokines in serum.

<p>Groups are as defined in figure legend 2. Data is shown for (A) TNF-alpha, (B) IL-6, (C) IL-10, (D), IL-1alpha, (E) IL-12 (only TR24 and 18 wk HRLF rat serum were tested for IL-12), and (F) MIP2. Symbols: *:p<0.05, **:p<0.01, compared to age-matched control rats. ^a: p<0.05, compared to age-matched trained rats that rested for 24 weeks after the initial training period.