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(a) MMP9 mRNA expression; (b) TIMP1 mRNA expression; (c) MMP9/TIMP1 ratio. NC, normal control group; SM, Salvia miltiorrhiza group; LPS, lipopolysaccharide group; Tsm, Salvia miltiorrhiza treatment group. ns, no statistical difference. 2 h, 6 h, 12 h, and 24 h indicate 2, 6, 12, and 24 hours' time points, respectively. Data are shown as mean ± SD (n = 6 per group). ∗p < 0.05; ∗∗and ∗∗∗p < 0.01; ∗∗∗∗p < 0.0001.
