Figure 2

Plasma levels of cytokines/chemokines derived from old individuals from Germany and Italy and from Italian nonagenarians. Analyses were performed as described in Methods. Old (G), n = 75-90; old (I), n = 38-40; nonagenarians (I), n = 14-24. G, Germany; I, Italy. Wilcoxon statistic test, mean + standard error, *p <0.05; **p < 0.01.