IL-6 production rate of RAW 264.7 with Brachythecium populeum extract. Abbreviations: WE, water extract of B. populeum; EE, 70% ethanol extract of B. populeum; IL-6, interleukin-6; Cont. -, control group without lipopolysaccharide (LPS); Cont. +, control group with LPS. Compared with water extracts; *P<0.05, **P<0.01.
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