Fig. 4

TDO2 protein expression in IL-1β‒ and TNF-α‒stimulated OA-FLS. (A) Typical western blotimages and quantitative analysis of TDO2 protein expression in IL-1β‒stimulated OA-FLS (n = 3) and controls (n = 3). (B) typical western blotimages and quantitative analysis of TDO2 protein expression in TNF-α‒stimulated OA-FLS (n = 3) and controls (n = 3); **P < 0.01, *P < 0.05 vs. control group