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Protective effect of taraxasterol against COX-2 in a rheumatoid arthritis mouse model. (A) Representative western blot showing the protective effect of taraxasterol against COX-2 protein expression and (B) statistical analysis of COX-2 protein expression level in the rheumatoid arthritis mouse model. **P<0.01 vs. the control group; ##P<0.01 vs. the rheumatoid arthritis group. COX-2, cyclooxygenase-2; Tar, taraxasterol; RA, rheumatoid arthritis.
