Queen's Medical Research Institute and University of Edinburgh 2 articles published in JoVE Medicine Generation and 3-Dimensional Quantitation of Arterial Lesions in Mice Using Optical Projection Tomography Nicholas S. Kirkby1, Lucinda Low1, Junxi Wu1, Eileen Miller1, Jonathan R. Seckl1, Brian R. Walker1, David J. Webb1, Patrick W. F. Hadoke1 1 Ex vivo analysis of arterial lesions from animal models of cardiovascular disease classically relies on histological and immunohistochemical techniques. These provide 2-dimensional measurements in 3-dimensional lesions. This manuscript describes the generation of arterial lesions for quantitative analysis in 3-dimensions using optical projection tomography. Biology Isolation of Blood-vessel-derived Multipotent Precursors from Human Skeletal Muscle William C.W. Chen1, Arman Saparov2,3, Mirko Corselli4, Mihaela Crisan5, Bo Zheng6, Bruno Péault7,8, Johnny Huard9 1Stem Cell Research Center, Department of Bioengineering and Orthopedic Surgery, University of Pittsburgh, 2Department of Orthopedic Surgery, University of Pittsburgh, 3Nazarbayev University Research and Innovation System, Nazarbayev University, 4Department of Orthopaedic Surgery, UCLA Orthopaedic Hospital and the Orthopaedic Hospital Research Center, University of California at Los Angeles, 5Department of Cell Biology, Erasmus MC Stem Cell Institute, 6OHSU Center for Regenerative Medicine, Oregon Health & Science University, 7 Blood vessels within human skeletal muscle harbor several multi-lineage precursor populations that are ideal for regenerative applications. This isolation method allows simultaneous purification of three multipotent precursor cell populations respectively from three structural layers of blood vessels: myogenic endothelial cells from intima, pericytes from media, and adventitial cells from adventitia.