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. 2019 Mar 19;9(3):459. doi: 10.3390/nano9030459

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© 2019 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/).

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TEM images of cholic acid-conjugated methylcellulose-polyethylenimines (MCPEI-CA)₁₀ nano-aggregates (A) 10 μg/mL, (C) 20 μg/mL, and MCPEI-CA₁₀/Dox (Doxorubicin) nano-aggregates (B) 10 μg/mL, (D) 20 μg/mL.