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Histological sections of the ventral male prostate and female prostate of senile gerbils subjected to immunohistochemistry for ERβ. Control group: (a) (male) and (b–c) (female). Details of the nuclear immunoreactivity in the epithelial cells (large arrows). Cytoplasmic marcation (dashed arrow). EE/PRE male group: (d) Increase in nuclear immunoreactivity in the epithelial cell (arrowhead). EE/PRE female group (e). Labelled epithelial cell (arrow).
