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(A) In vivo real-time imaging of NIR-797-loaded HPC hydrogels (Gel-dye, left mice) or free NIR-797 (right mice) in tumor sites following subcutaneous administration. Fluorescence of NIR-797 was determined at different time points. (B) Tumor infiltration of T cells following a single local dose of 5 Gy irradiation. The red arrows indicated the T cells. Scale bar = 50µm.
Abbreviation: HPC, hydroxypropyl cellulose.
