Figure 3From: Fibroblast activation protein is expressed by rheumatoid myofibroblast-like synoviocytesImmunohistochemical analysis of activation markers in synovial membranes of osteoarthritis. Phenotypic markers that are instrumental in extracellular matrix alteration are detectable only at a low level (MMP-1, CD44v7/8) in areas that are slightly FAP-positive. Magnification, ×400. FAP, fibroblast activation protein; MMP, matrix metalloproteinase.Back to article page