Chongqing University Cancer Hospital 2 articles published in JoVE Medicine A Modified Cuff Technique for Mouse Cervical Heterotopic Heart Transplantation Model Xin Mao*1, Peng Xian*1, Hang You1,2, Gang Huang3, Jun Li1 1Department of Urological Oncology Surgery, Chongqing University Cancer Hospital, 2School of Medicine, Chongqing University, 3Department of Biochemistry and Molecular Biology, College of Basic Medical Science, Army Medical University In the present protocol, a mouse heart transplantation model is used for investigating the mechanism of cardiac allograft rejection. In this heterotopic heart transplantation model, operation efficiency is improved, and the survival of cardiac grafts is ensured by a cervical end-to-end anastomosis of heart implantation using a modified Cuff technique. Medicine A Rat Orthotopic Renal Transplantation Model for Renal Allograft Rejection Hang You1,2, Xin Mao2, Chenyang Wang2, Gang Huang3, Marcus Groettrup4,5, Jun Li2 1School of Medicine, Chongqing University, 2Department of Urological Oncology Surgery, Chongqing University Cancer Hospital, 3Department of Biochemistry and Molecular Biology, College of Basic Medical Science, Army Medical University, 4Division of Immunology, Department of Biology, University of Konstanz, 5Biotechnology Institute Thurgau, University of Konstanz The rat orthotopic renal transplantation model contributes to investigating the mechanism of renal allograft rejection. The current model increases the recipients' survival without interference with blood supply and venous reflux of the lower body using an end-to-end anastomosis of kidney implantation and an end-to-side "tunnel" method of ureter-bladder anastomosis.