Figure 2. Effect of intra-articular administration of curcumin on synovial inflammation induced by LPS induction into rat osteoarthritic knee. (A) Representative images of HE -stained synovial tissues (200× magnification). (B) The concentrations of IL-1β and TNF-ɑ in synovial lavage. **P<0.01, compared with the sham control group; #P<0.05, ##P<0.01, compared with the ACLT OA model group; $ P<0.05, $$ P<0.01, compared with the ACLT+LPS group.
