Figure 1

Immunohistochemical analysis of androgen receptor (AR) expression. AR expression was semiquantitatively analysed according to the percentage of cells showing positive expression in the nucleus: 0, 0% (A); 1+, 1–29% (B); 2+, 30–69% (C); 3+, ⩾70% (D). Androgen receptor expression was considered positive when scores were ⩾1, and negative when scores were 0.