Figure 1From: Effects of Er-Miao-San extracts on TNF-alpha-induced MMP-1 expression in human dermal fibroblasts The effect of EMS on cell viability in HDFs. Cell viability was determined by the WST-1 assay. HDFs were incubated with 62.5-1000 μg/ml EMS (A), Cortex Phellodendri (CP) (B), or Rhizoma Atractylodis (RA) (C) for 24 h. The graph represents mean ± S.D. of relative cell viability from three independent experiments.Back to article page