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. 2018 Jan 25;8:7. doi: 10.3389/fcimb.2018.00007

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Copyright © 2018 Du, Yu, Pang, Xu, Mao, Yuan, He and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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CLSM images of the effect of UEA-1 conjugation on M cell transport. UEA-1/PLGA-coumarin-6 NPs (A) and PLGA-coumarin-6 NPs (B) penetrated the intestine mainly in the PP.