Figure 3.

Production of GM-CSF in PBMCs; Peripheral blood mononuclear cells (PBMCs) were either not stimulated or stimulated with LPS (0.4 μg/mL) and supernatants analyzed by ELISA for GM-CSF. Comparisons between the young and older groups were performed with t test analysis. Statistical significance was defined at p < 0.05. White bars: young subjects (n = 12); Gray bars: older subjects (n = 6); Mean: - - - (dashed) Median: ----- (solid)