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. 2021 Dec 21;8:805228. doi: 10.3389/fmolb.2021.805228

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Copyright © 2021 Ma, Qu, Liu, Xu and Tu.

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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Illustration of fluorescence imaging for microRNA-21 by using ZIF-8 NPs as a nanocarrier for codelivery of ϕ29 DNA polymerase and DNA probes in living cells. Reproduced with permission. Copyright 2019, Analytical Chemistry.