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Viability of chondrocytes were not affected by IL-1β/OB/3-MA. (A) Molecular structure of OB. (B) The viability of chondrocytes treated with IL-1β (5 ng/ml), OB (160 μM), 3-MA (5 mM) for 24 h was measured by a CCK-8 kit. Data were presented as means ± SD (n = 3). ns, no significance.
