Fig. 7
From: Nanozyme-based aptasensors for the detection of tumor biomarkers
(A) Schematic diagram of the colorimetric/photothermal dual-mode biosensor for the detection of MCF-7 cell-derived exosomes based on dual aptamer recognition. Reprinted with permission from [66]. (B) The principle of electrochemical/colorimetric dual-mode sensitive detection sensor for exosomes based on MoS2-Au@Pt nanozyme. Reprinted with permission from [92]