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. 2023 Aug 31;10:rbad073. doi: 10.1093/rb/rbad073

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© The Author(s) 2023. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — (A) Synthesis diagram of IR780@BSA@SPIO nanosystem. (B) DLS data and TEM characterization of IR780@BSA@SPIO nanosystem. (C) T₂WI image and the relationship between the relaxation value and concentration of IR780@BSA@SPIO nanosystem. (D) NIR-II fluorescence imaging of IR780@BSA@SPIO and IR780@BSA two systems, and the relationship between the signal intensity and IR780’s concentration. The image on the top shows the fluorescence image of IR780@BSA while the one at the bottom displays the fluorescence image of IR780@BSA@SPIO. (E) Heating absorption and dissipation rocking result of nanosystem under 808 nm laser irradiation at [IR780] 1.5 μg/mL.