Research Article

Conditioned Media from Adipose-Tissue-Derived Mesenchymal Stem Cells Downregulate Degradative Mediators Induced by Interleukin-1β in Osteoarthritic Chondrocytes

Figure 3

Immunocytochemical analysis of collagen II expression. Chondrocytes were treated with CM and/or IL-1 for 5 days. (a) Representative image showing the expression of collagen II (FITC-immunofluorescence, green) and DAPI (blue) for cellular nuclei. Original magnification 200. (b) Percentages of collagen II-positive cells with respect to total cell numbers. Data represent mean ± S.E.M. of independent cultures with chondrocytes from 4 different donors. + , ++ with respect to nonstimulated cells; ** with respect to IL-1 .
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