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Stress-induced changes in IL-6 between baseline and the end of the stress protocol in 506 healthy, older individuals (55 % males). Values are unadjusted mean interleukin-6 expressed in picograms per milliliter at baseline (pre-stress), immediately after stress, and 45 and 75 min after stress exposure (error bars are standard errors of the mean). Acute stress elicited significant over time increases in serum level of IL-6 (time effect F 3,1512 = 201.57, p = <0.001)
