University of Iceland View Institution's Website 3 articles published in JoVE Medicine Measuring Retinal Vessel Diameter from Mouse Fluorescent Angiography Images Andrea García-Llorca1, Hallur Reynisson1, Thor Eysteinsson1,2 1Department of Physiology, Biomedical Center, Faculty of Medicine, University of Iceland, 2Department of Ophthalmology, National University Hospital Mouse retinal vasculature is particularly interesting in understanding the mechanisms of vascular pattern formation. This protocol automatically measures the diameter of mouse retinal vessels from fluorescent angiography fundus images at a fixed distance from the optic disk. Biochemistry Using the Open-Source MALDI TOF-MS IDBac Pipeline for Analysis of Microbial Protein and Specialized Metabolite Data Chase M. Clark1, Maria S. Costa1,2, Erin Conley1, Emma Li1, Laura M. Sanchez1, Brian T. Murphy1 1Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 2Faculty of Pharmaceutical Sciences, University of Iceland IDBac is an open-source mass spectrometry-based bioinformatics pipeline that integrates data from both intact protein and specialized metabolite spectra, collected on cell material scraped from bacterial colonies. The pipeline allows researchers to rapidly organize hundreds to thousands of bacterial colonies into putative taxonomic groups, and further differentiate them based on specialized metabolite production. Immunology and Infection Propagating and Detecting an Infectious Molecular Clone of Maedi-visna Virus that Expresses Green Fluorescent Protein Stefán R. Jónsson1, Valgerdur Andrésdóttir1 1Institute for Experimental Pathology, University of Iceland We describe a molecular clone of maedi-visna virus that expresses GFP and is fully infectious. Replication of this virus can be detected by using fluorescence microscopy and flow cytometry.