Harvard-MIT Division of Health Sciences and Technology 2 articles published in JoVE Behavior Large Volume, Behaviorally-relevant Illumination for Optogenetics in Non-human Primates Leah C Acker1,2,3, Erica N. Pino1,4,5, Edward S. Boyden1,6,7, Robert Desimone1,7 1McGovern Institute, Massachusetts Institute of Technology, 2Harvard-MIT Division of Heath Sciences and Technology, 3Department of Anesthesiology, Duke University Medical Center, 4Department of Biology, Massachusetts Institute of Technology, 5Division of Pharmacoengineering and Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, 6Media Lab and Department of Biological Engineering, Massachusetts Institute of Technology, 7Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology A protocol to build a tissue penetrating illuminator for delivering light over large volumes with minimal diameter is presented. Bioengineering Systematic Analysis of In Vitro Cell Rolling Using a Multi-well Plate Microfluidic System Oren Levy1,2,3,4,5, Priya Anandakumaran1,2,3,4,5, Jessica Ngai1,2,3,4,5, Rohit Karnik6, Jeffrey M. Karp1,2,3,4,5 1 This study used a multi-well plate microfluidic system, significantly increasing throughput of cell rolling studies under physiologically relevant shear flow. Given the importance of cell rolling in the multi-step cell homing cascade and the importance of cell homing following systemic delivery of exogenous populations of cells in patients, this system offers potential as a screening platform to improve cell-based therapy.