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. 2014 Feb 12;9:913–920. doi: 10.2147/IJN.S56894

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© 2014 Cai et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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Transmission electron micrograph of 25-OCH₃-PPD-loaded self-microemulsifying drug-delivery system.