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. 2007 May 25;121(3):200–207. doi: 10.1016/j.jconrel.2007.05.018

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Copyright © 2007 Elsevier B.V. All rights reserved.

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Fig. 2 — Appearance and size of m-chitosan microspheres. (a) Transmission electron micrograph of m-chitosan microspheres. Scale bar represents 100 nm. (b) Atomic force micrograph of m-chitosan microspheres. Scale bar represents 1 μm.