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. 2021 Sep 15;9:711787. doi: 10.3389/fbioe.2021.711787

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Copyright © 2021 Wang, Dong, Wei, Wang, Chang, Wu, Liu, Chang, Yin, Luo, Jia, Yan 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) and the copyright owner(s) 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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(A, B) Ultrasonic images of GA porous-lipid/PLGA MBs. (C) Changes in signal strength in the liver. After injection of GA porous-lipid/PLGA MBs, the liver imaging was rapidly enhanced, the signal gradually decreasing after 7 min and completely disappearing after 30 min.