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. 2019 May 31;10:610. doi: 10.3389/fphar.2019.00610

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Copyright © 2019 Zhang, Chen, Deng, Zhang, Sun, Wang, Yang, Lv, Han and Xie

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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Passive targeting ultrasound imaging of nanobubbles in tumors. (A) Representative ultrasound images of nanobubbles and microbubbles. (B) The quantitative comparison of imaging capability between nanobubbles and microbubbles at different time points.