Additional file 3.

Figure S3: Flow cytometric and immunocytochemical analysis of CPC adhesion receptors and cytoskeleton expression. A: Flow cytometric analysis of the integrin subunits α1, α2, α5 and α6. Open histograms represent marker-specific antibodies. Gray shaded histograms represent isotype control. Representative histograms of two independent experiments are shown. B: Cadherin-11 specific staining of chondrogenic progenitor cells (CPC). C: Fluorescence staining of actin stress fibers by Phalloidin-FITC (green), of Vinculin by immunocytology (red) and of the nuclei by DAPI (blue) in CPC.

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Joos et al. Arthritis Research & Therapy 2013 15:R119   doi:10.1186/ar4299