Fig. 4From: Interleukin-1 receptor antagonist (IL-1Ra) is more effective in suppressing cytokine-induced catabolism in cartilage-synovium co-culture than in cartilage monocultureChondrocyte viability images obtained on days 8, 16, and 24 in a cartilage monoculture and b cartilage + synovium co-culture treated with IL-1α and with a single or continuous (Cont.) dose of IL-1Ra. Viable cells shown in green, non-viable shown in red. Arrow indicates superficial layer of the tissue. Scale bar = 200 μmBack to article page