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. 2018 Feb 8;4(1):e000616. doi: 10.1136/rmdopen-2017-000616

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Example of ultrasound, histological and CD68 or factor VIII (FVIII) analyses. (A) B mode synovial thickness measurements. (B) H&E stained slide. Histological synovitis: lining layer hyperplasia, stroma activation and inflammatory infiltrate. (C) Corresponding CD68 staining. Original magnification 20×. (D) Power Doppler activity assessment. (E) H&E stained slide. Multiple blood vessels. (F) Corresponding FVIII staining. Original magnification 20×.