Additional file 3: Figure S2.

IL-29 induces protein expression of IL-6 and IL-8 in primary RA-FLS. The primary RA-FLS were cultured with IL-29 (1, 10, 100 ng/ml) or TNF-a (10 ng/ml, a positive control) for 24 h and the production of IL-6 (A&D) and IL-8 (B& E) were measured using ELISA. Because the effects of IL-29 at 1 ng/ml on the production of IL-6, 8 in primary RA-FLS are similar to the medium control group, the data from IL-29 at 1 ng/ml in primary RA-FLS are not shown in the figure. The data present the mean ± SD for 3 independent experiments. **p < 0.01 versus medium control.

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Xu et al. Arthritis Research & Therapy 2013 15:R170   doi:10.1186/ar4357