Research Article

Surface Modification with NGF-Loaded Chitosan/Heparin Nanoparticles for Improving Biocompatibility of Cardiovascular Stent

Table 2

Surface elemental composition determined by XPS.

SamplesC%N%O%S%

316L SS69.305.7624.830.12
SS-DA74.747.9817.270
SS-DA-NP65.789.6823.441.11
SS-DA-NP@NGF63.5811.8723.680.87