CD14+ monocytes were selected from PBMCs using CD14-microbeads (Miltenyi) and cells (5 ×105) were stimulated with IFN-γ (100 U/ml, Biolegend) and concanavalin (ConA, Sigma-Aldrich, at 5 μg/ml) as previously described (50 (link), 51 (link)) in the presence or not of etanercept (10 μg/ml), isotype control, IL-17 [10 ng/ml, PreproTech, (52 (link))], IL-10 [50 ng/ml, R&D systems, (26 (link))] or TNF-α (50 ng/ml, Euromedex) and incubated for 9 days.
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