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Nitric oxide generation kinetics in CD4+ and CD8+ cells following activation in healthy controls (n = 9) and ankylosing spondylitis patients before infliximab (IFX) therapy (n = 13) then 2 and 6 weeks after initiation of IFX (n = 11 and 8, resp.). *P < 0.05 AUC: area under the curve. For details of IFX therapy, see text.
