This is the pre-peer reviewed version of the following article: Endothelial nanoparticle binding kinetics are matrix and size dependent, Amber L. Doiron, Brendan Clark, Kristina D. Rinker; Biotechnology and Bioengineering, 108(12), pages 2988–2998, December 2011, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/bit.23253/abstract Accepted 20 June 2011 Endothelial nanoparticle binding kinetics are matrix and size dependent Amber L. Doiron 1,2,4,6,7 , Brendan Clark 1 , and Kristina D. Rinker 1,2,3,5 1 Cellular and Molecular Bioengineering Research Laboratory, University of Calgary, Calgary, Canada 2 Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Canada 3 Department of Physiology and Pharmacology, University of Calgary, Calgary, Canada 4 Department of Radiology, University of Calgary, Calgary, Canada 5 Centre for Bioengineering Research and Education, University of Calgary, Calgary, Canada, 6 Hotchkiss Brain Institute, University of Calgary, Calgary, Canada 7 Seaman Family MR Research Centre, Foothills Medical Centre, Calgary, Canada Corresponding Author: Kristina D. Rinker, University of Calgary, 2500 University Drive NW, Calgary, Department of Chemical and Petroleum Engineering, AB T2N 1N4, 403-210-9733, kdrinker@ucalgary.ca Running Title: Particle Binding Kinetics Dependence on Size