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. 2012 Oct 3;7(1):549. doi: 10.1186/1556-276X-7-549

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Copyright ©2012 Azizian et al.; licensee Springer.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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FTIR spectra for DEGPEGylated nanoparticles. FTIR spectra of (a) mPEG-silane550 powder, (b) mPEG-silane2000 powder, (c) a commercial SPGO powder, (d) mPEG-silane550-coated Gd₂O₃ nanoparticles, and (e) mPEG-silane2000-coated Gd₂O₃ nanoparticles.