PCNA distribution in the stroma in different treatment groups. (A-D) FTIC with DAPI staining and (E) FTIC staining alone for PCNA. Fluorescence signal could be seen arising from the stroma. The highest intensity could be seen arising from (E+P)+100Q group (D & E images). L, lumen; G, glands; S, stroma; E, epithelium. A = control, B = estrogen plus progesterone, C = estrogen plus progesterone with 10 mg/kg/day quercetin, D & E = estrogen plus progesterone with 100 mg/kg/day quercetin.