Sana Klinikum Hof 1 article published in JoVE Bioengineering The Arteriovenous (AV) Loop in a Small Animal Model to Study Angiogenesis and Vascularized Tissue Engineering Annika Weigand1, Justus P. Beier1, Andreas Arkudas1, Majida Al-Abboodi1,2, Elias Polykandriotis3, Raymund E. Horch1, Anja M. Boos1 1Department of Plastic and Hand Surgery and Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital of Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), 2Genetic Engineering and Biotechnology Institute for Postgraduate Studies, Baghdad University, 3Department of Plastic, Hand and Microsurgery, Sana Klinikum Hof GmbH We describe a microsurgical approach for the generation of an arteriovenous (AV) loop as a model for analyzing vascularization in vivo in an isolated and well-characterized environment. This model is not only useful for the investigation of angiogenesis, but is also optimally suited for engineering axially vascularized and transplantable tissues.