IL-17 stimulates the expression of TSG-6 mRNA. (a) Time course of TSG-6 mRNA expression after stimulation with 20 ng/ml IL-17. (b) Dose-dependent stimulation of TSG-6 mRNA expression after stimulation with IL-17 for 24 hours. Results of quantitative RT–PCR are given as percentages of the basal control (culture without IL-17 set at 100%). Results are from four different patients, each measured in duplicate. *P < 0.05 in comparison with the unstimulated control.