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(A) Preparation of Gd@GCNs nanoplatform for imaging-guided phototherapy in solid tumors, (B) In vivo fluorescence images acquired from tumor-bearing nude mice after intravenous injection of Gd@GCNs at different time intervals, noting significant tumor shrinkage over time after PDT treatment. Reprinted with permission from ref. [116]. Copyright 2018 Wiley Online Library.
