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. 2021 Aug 18;11(8):281. doi: 10.3390/bios11080281

Figure 17.

Figure 17

(A) Schematic representation of renewable PEC cytosensor for CTC capture and refresh [264]. Copyright 2021 Elsevier B.V. (B) Schematic representation of the NIR-light-excited PEC interface and the MCF-7 cell detection principle [267]. Copyright 2016 American Chemical Society. (C) Schematic representation of CTC measurement in whole blood based on MNs isolation of CTCs and Cu2O-aptamer as signal probe [268]. Copyright 2020 Elsevier B.V. (D) Schematic representation of paper-based PEC cytosensor based on the dual competitive strategy [269]. Copyright 2017 American Chemical Society.