Figure 6From: Flow cytometric characterization of freshly isolated and culture expanded human synovial cell populations in patients with chronic arthritisSemi-quantitative assessment of vascularization in synovial tissue by immunohistochemistry. Magnification 100×. (a to c) von Willebrand Factor staining. (a) Positive endothelial cells are detected. (b) Isotype control. (c) Positive (sub)endothelial cells and fibroblasts are detected. (d to f) CD34 staining. (e) Isotype control. (c and f) Scores in different patient groups.Back to article page