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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: J Rheumatol. 2015 Mar 1;42(5):749–759. doi: 10.3899/jrheum.140630

Figure 3.

Figure 3

Level of surface APRIL in myeloid cells correlates with disease activity in patients with RA. Surface APRIL expression by myeloid cells from patients with RA was determined by flow cytometry. MFI of surface APRIL staining in patients with RA was normalized to that of healthy donors to determine the relative APRIL MFI. The Spearman ρ test indicates that relative surface APRIL expression in myeloid cells is highly correlated with disease activity as determined by DAS28 in 25 patients with RA. APRIL: a proliferation-inducing ligand; RA: rheumatoid arthritis; MFI: median fluorescence intensity; DAS28: 28-joint Disease Activity Score.