Herman B Wells Center for Pediatric Research 1 article published in JoVE Developmental Biology Kinetic Analysis of Vasculogenesis Quantifies Dynamics of Vasculogenesis and Angiogenesis In Vitro Kaela M. Varberg1,2, Seth Winfree3,4, Kenneth W. Dunn3,4, Laura S. Haneline1,2,5,6,7 1Department of Cellular and Integrative Physiology, Indiana University School of Medicine, 2Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, 3Indiana Center for Biological Microscopy, Indiana University School of Medicine, 4Department of Medicine, Indiana University School of Medicine, 5Department of Pediatrics, Indiana University School of Medicine, 6Department of Microbiology and Immunology, Indiana University School of Medicine, 7Indiana University Simon Cancer Center, Indiana University School of Medicine Here, we present a protocol for time-lapse imaging and analysis of vasculogenesis in vitro using phase contrast microscopy coupled with the open source software, Kinetic Analysis of Vasculogenesis. This protocol can be applied to quantitatively assess the vasculogenic potential of numerous cell types or experimental conditions that model vascular disease.