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Serum concentrations and relative mRNA expression of pro-inflammatory cytokines, i.e., TNF-α (A and B), IL-1β (C and D), and IL-6 (E and F) in DS-g-MTX, Dex-g-MTX, free MTX, and NS as control groups were measured by ELISA and RT-PCR tests. Data were presented as mean ± SD (n = 3;*P < 0.05, **P < 0.01, ***P < 0.001).
