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(a) AuNP-based CM detection assay format; (b) Sensing mechanism toward STX and TTX based on NMOFs-aptasensor; (c) Sensing process in microtubule (A) and on electrode surface (B); (d) Preparation for SH-cDNA-ADANRs (A) and NH2-apt-CS-Fe3O4 (B), and SERS detection schematic (C).
