Additional file 1: Figure S1.

The soluble TNF-α protein levels after the stimulation of TNF-α (10 ng/mL, 24 h) by western blotting. The results demonstrate that soluble TNF-α protein was significantly elevated after the stimulation of TNF-α compared to the control cells.

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Hiyama et al. Arthritis Research & Therapy 2013 15:R189   doi:10.1186/ar4379