Figure 1From: Expression of the TGF-beta1 system in human testicular pathologiesTGF-β1 system in normal testes. Sections of normal testes showing immunohistochemistry of TGF-β 1 (Panel A); ALK-5 (Panel B); ALK-1 (Panel C), Smad 2/3 (Panel D), p-Smad 2/3 (Panel E); Smad 1/5 (Panel F); p-Smad 1/5 (Panel G). Magnification 400×.Back to article page