Figure 5. Cellular proliferation of Sertoli cells in porcine testicular grafts from severe combined immunodeficient (SCID) mice. Grafts were removed at 0 (A, F), 3 (B, G), 10 (C, H), 20 (D, I), and 40 (E, J) days posttransplantation and then fixed and immunostained with antibodies against vimentin (A-E) or proliferating cell nuclear antigen (PCNA) (F-J). Aminoethyl carbazole (AEC) was used as chromogen. Arrow indicates proliferating Sertoli cell. Photomicrographs (A-E) are from serial sections to (F-J), respectively. Bar in (J) = 50 µm for (A-J).