Fig. 4

The effect of muramyl dipeptide (MDP) and curcumin treatments alone and in combination on the expression of inflammatory cytokines genes including IL-6, IL-1β and TNF-α genes in fibroblast-like synoviocytes (FLSs) of RA versus trauma groups. Data are presented as Mean ± SEM (*P < 0.05; **P < 0.01)