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Schematic illustration of magnetic electrochemical immunoassays of OP-AChE: (A) Plasma samples, (B) Magnetic capture of OP-AChE using amorphous MP-Ab1 conjugates, (C) Selective recognition of bound OP-AChE using QD-Ab2 labels, (D) Electrochemical SWV analysis of cadmium released by acid from the captured QDs, and (E) Representative SWV signal output.
