Figure 9From: Surface modification of a polyhedral oligomeric silsesquioxane poly(carbonate-urea) urethane (POSS-PCU) nanocomposite polymer as a stent coating for enhanced capture of endothelial progenitor cells Detection of antibody engraftment via XPS. Atomic composition of POSS-PCU-CD34 showed a higher percentage of N compared to POSS-PCU, indicating presence of antibodies on the surface.Back to article page