Figure 3. Dissection of urogenital tracts of wild-type (WT), androgen receptor knockout (ARKO), and Sertoli cell–selective androgen receptor knockout (SCARKO) male mice at the age of 50 days. dd indicates ductus deferens; sv, seminal vesicles; t, testis; e, epididymis; ft, fat tissue. Originally published in DeGendt et al, 2004 (Copyright 2004, National Academy of Sciences, U.S.A). Color figure available online at www.andrologyjournal.org.