Chongqing University 3 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. Neuroscience Osmotic Pump-based Drug-delivery for In Vivo Remyelination Research on the Central Nervous System Xiaorui Wang1, Yixun Su1,2, Xuelian Hu1,3, Jianqin Niu1 1Department of Histology and Embryology, Chongqing Key Laboratory of Neurobiology, Brain, and Intelligence Research Key Laboratory of Chongqing Education Commission, Third Military Medical University, 2Research Centre, The Seventh Affiliated Hospital of Sun Yat-sen University, 3School of Medicine, Chongqing University Demyelination takes place in multiple central nervous system diseases. A reliable in vivo drug delivery technique is necessary for remyelinating drug testing. This protocol describes an osmotic pump-based method that allows long-term drug delivery directly into the brain parenchyma and improves the drug bioavailability, with broad application in remyelination research.