. 2024 Apr 21;29(8):1888. doi: 10.3390/molecules29081888
© 2024 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Figure 2.
TEM image of 5DB-MSN, 10DB-MSN, and 20DB-MSN.