. 2018 Jul 24;10(3):103. doi: 10.3390/pharmaceutics10030103
© 2018 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 (http://creativecommons.org/licenses/by/4.0/).
Figure 5.
SEM images of the coaxial fibers.