Cloning and characterization of an adenoviral vector for highly efficient and doxycycline -- suppressible expression of bioactive human single -- chain interleukin 12 in colon cancer. - Wulff, Holger; Krieger, Thorsten; Kruger, Karen; Stahmer, Ingrid; Thaiss, Friedrich; Schafer, Hansjorg; Block, Andreas (BMC Biotechnology, 2007)