. 2016 Mar 5;21(3):311. doi: 10.3390/molecules21030311
© 2016 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
Scheme 2.
Plausible mechanism of the cross-linking.