Additional file 6.

Figure S6: Effects of IL-1β and TNF-α on CPC outgrowth. The number of outgrown cells without stimulation (Control) and stimulated with interleukin (IL)-1β (IL, 1 ng/ml) or tumor necrosis factor (TNF)-α (TNF, 10 ng/ml) is depicted in log scale. The values represent the mean ± SEM with n = 4. CPC: chondrogenic progenitor cells.

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