Figure 2From: 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 amine groups on anti-CD34 antibody. OPA assay showed the presence of amine groups on POSS-PCU. This value was somewhat less that pure anti-CD34, indicating a certain about of loss during functionalization.Back to article page