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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/).
TEM images for different samples and their associated particle size histogram: (A) BSA2.5%, S/NS2/5; (B) BSA2.5%, S/NS1/2; (C) BSA2%, S/NS2/5; and (D) BSA2%, S/NS1/2. Images were analyzed using ImageJ and results are represented as mean size and standard deviation (SD).