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Schematic illustration of mechanism for the trapLFI biosensor with (a) low and (b) high concentration of cortisol, and (c) comparison of signal behavior of conventional competitive LFIA and trapLFI biosensor in the presence of different concentrations of cortisol (- negative sample, + positive sample low concentration, +++ positive sample high concentration). Adapted from Ref. [52], Copyright (2018), with permission from The Royal Society of Chemistry.
