Effect of apigenin intake on the extent of proliferation in the dorso-lateral prostates of TRAMP mice. A Apigenin intake in TRAMP mice at 20 and 50µg/day exhibited decreased nuclear expression of proliferating cell nuclear antigen (PCNA) in a dose-dependent manner as ascertained by immunohistochemical analyses. In vehicle-treated TRAMP mice, extensive PCNA staining was observed in the nuclei of epithelial cells compared with non-transgenic mice. B Statistical box plot analysis of PCNA nuclear presence was performed by counting PCNA positive nuclear stained cells from various locations in non-transgenic control, TRAMP control, TRAMP (20µg/day apigenin) and TRAMP (50µg/day apigenin). Box plot for positive nuclei (%), black bar = median, red box = 25th to 75th percentiles, Bars = entire range from 5 mice. Details are described in ‘Materials and Method’ section.