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. 2021 Mar 29;9:637754. doi: 10.3389/fchem.2021.637754

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Copyright © 2021 Li, Zhang, Deng and Zheng.

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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Schematic diagram of Cino nanomedicine with targeted delivery and smart response. Cino, cinobufagin; PDA, polydopamine; FA, folic acid; FR, folate receptor; NIR, near infrared.