. 2021 Apr 27;7(6):2309–2316. doi: 10.1021/acsbiomaterials.1c00048
© 2021 The Authors. Published
by American
Chemical Society
Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
Figure 2.
XPS high-resolution spectra (O region).