Induction of NQO1 in non-tumorigenic ER (−) human mammary epithelial cells (MCF-10A). Quantitation of western blot analysis of the Induction of NQO1 in MCF-10A cells by A) crude extracts of G. glabra; GG (10 μg/mL), G. uralensis; GU (10 μg/mL, open bar), G. Inflata; GI (10 μg/mL) in comparison to hops extract (5 μg/mL) and B) characteristic compounds LigC (5 μM), LigF (10 μM), and LicA (5 μM) in comparison to XH (5 μM). Results are shown as fold induction and are the means of three independent determinations.