Brief Article
Copyright ©2010 Baishideng.
World J Gastroenterol. Apr 7, 2010; 16(13): 1660-1664
Published online Apr 7, 2010. doi: 10.3748/wjg.v16.i13.1660
Figure 3
Figure 3 Schematic drawings of the integrating component of retroviral vector SSR#69 before and after Cre-recombination. SSR#69 contains the hygromycin B resistance gene (Hyg R) as a positive selectable marker and the herpes simplex virus thymidine kinase gene (HSV-TK) as a negative selectable marker. The SV40T, Hyg R and HSV-TK genes are flanked by loxP sites.