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Image of near the skin surface tumor on the NIR‐II window. (A) Ag2S QD subcutaneous breast cancer imaging based on the EPR effect. Reproduced with permission.[ 63 ] Copyright 2012, John Wiley & Sons. (B) Molecule structure, absorption spectra, and emission spectra of CD133 of the NIR‐II dye peptide probe CP‐IRT and its targeted imaging in mice subcutaneous colorectal cancer in vivo. Reproduced with permission.[ 165 ] Copyright 2018, John Wiley & Sons.
