A Novel 2.5D Culture Platform to Investigate the Role of Stiffness Gradients on Adhesion-Independent Cell Migration Pebworth, Mark-Phillip ; Cismas, Sabrina A. ; Asuri, Prashanth Abstract Publication: PLoS ONE Pub Date: October 2014 DOI: 10.1371/journal.pone.0110453 Bibcode: 2014PLoSO...9k0453P