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Fig. 1 | Arthritis Research & Therapy

Fig. 1

From: Differential synovial tissue biomarkers among psoriatic arthritis and rheumatoid factor/anti-citrulline antibody-negative rheumatoid arthritis

Fig. 1

ag IHC staining for CD68/CD21 on ST of patients with naïve or MTX-IR PsA and Abneg RA patients. Example photos of CD68 (RED)/CD21(DAB) staining of ST biopsies from patients with naïve (a) or MTX-IR (b) PsA patients and with naïve (c) or MTX-IR (d) Abneg RA (magnification × 20 and magnification × 40 in the corresponding inset). Black arrows indicate CD68+ cells (red), and black arrow head indicates CD21+ cells (brown) in the corresponding inset. e Lining IHC score for CD68+ cells in PsA and Abneg RA patients divided by treatment regimen. f Sublining IHC score for CD68+ cells in PsA and Abneg RA patients divided by treatment regimen. g IHC score for CD21+ cells in PsA and Abneg RA patients divided by treatment regimen. IHC immunohistochemistry, PsA psoriatic arthritis, RA rheumatoid arthritis, Ab autoantibody, MTX-IR methotrexate inadequately responder, CD cluster designation

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