Nova Southeastern University 1 article published in JoVE Neuroscience Receptor Autoradiography Protocol for the Localized Visualization of Angiotensin II Receptors Andrea Linares1, Leena E. Couling2, Eduardo J. Carrera3, Robert C. Speth2 1Farquhar College of Arts and Sciences, Nova Southeastern University, 2Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, 3School of Medicine, University of Colorado Here we present a protocol to describe the localization of angiotensin II Type 1 receptors in the rat brain by quantitative, densitometric, in vitro receptor autoradiography using an iodine-125 labeled analog of angiotensin II.