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. 2023 Mar 28;11:1167329. doi: 10.3389/fbioe.2023.1167329

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Copyright © 2023 Zhang, Pan, Pan, Diao, Su, Huang, Yang, Li, Qi, Zhang and Wu.

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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Structures of the representative FAPI PET tracers and compound 1. IC₅₀ values for FAP-02, FAP-04, and compounds 1 and 2 were obtained from published literature reports (Jansen et al., 2013; Jansen et al., 2014; Lindner et al., 2018).