Figure 4.
Lack of tumorigenicity of phiC31 integrase–modified cord-lining epithelial cells (CLECs) in SCID mice. Immunostaining with antihuman vimentin antibody shows renal subcapsular engraftment of CLECs (a) 1 month and (b) 3 months after implantation in SCID mice. (c) Engraftment of CLECs, 1 month after injection into nuchal subcutaneous region. Original magnification ×200. (d) Immunostaining of cultured CLECs from explants recovered from subcutaneous regions of mice 1 month after implantation. Original magnification ×100. Bar = 100 µm.