“…In cither regions, most notably the premammillary nucleus and intercalated mammiilary nucleus, testosterone acts exclusively as an androgen, as these regions contain androgen but not estrogen receptors. In male genital tract tissues, the situation is simple because [ 3 H]T accumulates in nuclei almost exclusively in the form of [ 3 H]DHT (Rees, Bonsall, & Michael, 1988b) .…”