Figure 3From: Induction of release and up-regulated gene expression of interleukin (IL)-8 in A549 cells by serine proteinasesEffect of tryptase and elastase on the release of IL-8 from A549 cells. Cells were incubated with various concentrations of tryptase or elastase at 37°C for 16 h (A), or with 2 μg/ml tryptase or 0.3 μg/ml elastase for 2 h, 8 h and 16 h (B). Values shown are mean ± SE for 5 separate experiments. * P < 0.05 compared with the response to medium alone control.Back to article page