Figure 2
From: Distinct synovial immunopathology in Behçet disease and psoriatic arthritis
Microscopic analysis of synovial inflammation with lymphocytes in early untreated Behçet synovitis (BD) versus psoriatic synovitis (PsA). Representative pictures are shown of the immunostainings for CD20+ B lymphocytes; CD138+ plasma cells; CD3+, CD4+, and CD8+ T lymphocytes; and CD56+ natural killer cells. The number of infiltrating CD3+ T lymphocytes was significantly increased in BD versus PsA. Original magnification ×20.