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. Author manuscript; available in PMC: 2015 Apr 10.
Published in final edited form as: Planta Med. 2014 Feb 28;80(5):426–434. doi: 10.1055/s-0034-1368197

Fig. 4.

Fig. 4

Active Lauraceae plant extracts upregulated intracellular reduced glutathione levels in human bronchial epithelial cells. The concentrations of extracts were 60 μg/mL for ZK-02 and ZK-05, and 90 μg/mL for ZK-04, ZK-08, and ZK-10. The cells were treated with each active plant extract or sulforaphane (2.5 μM) for 24 hours. The reduced gluthatione concentration was measured by the QuantiChrom glutathione assay kit. Data presented are the mean ± SD (n = 3).* P < 0.05 vs. “Con” group.