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. Author manuscript; available in PMC: 2023 Jul 1.
Published in final edited form as: Eur J Nucl Med Mol Imaging. 2022 Jan 31;49(8):2844–2868. doi: 10.1007/s00259-022-05706-y

Fig. 1.

Fig. 1

Structures of representative FAPI-based tracers used in preclinical and clinical applications. Isotopes used to label these FAPIs are written in red in parenthesis