FIG. 6.

The effect of glutaraldehyde exposure on concentrations of inflammatory cytokines. Bars represent the mean protein concentration ± SE determined by ELISA present in supernatants of three A549 cell cultures from two independent exposures. Samples were collected at 8, 12, and 24 h after VitroCell exposure and evaluated for IL-8 (A), IL-6 (B), TNF-α (C), and GM-CSF (D) protein levels. Significant differences between dicarbonyl and clean air exposure are designated with **(p ≤ 0.01) or *(p ≤ 0.05).