Concentrations of PKE-derived phenolic compounds in serum of PC-3M-luc2 orthotopic xenograft bearing mice.^a

aTumor bearing male mice were gavaged with vehicle or PKE for 3 weeks. Terminal serum samples were collected 2–3 hours after the last gavage of PKE. NTG, nortachelogenin; MePS, pinosylvin monomethyl ether; PS, pinosylvin; HMR, 7-hydroxymatairesinol; MR, matairesinol; PST, pinostilbene; RV, resveratrol; EL, enterolactone. Concentrations (μM) are expressed as mean±SEM. *p<0.05, **p<0.01, ***p<0.001.