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(a) Synthesis of the red-emitting lysozyme-AuNCs and fluorescence enhancement for the analysis of E. coli. (b) Evolution of fluorescence spectra of lysozyme-AuNCs with varying E. coli concentrations. (c) The calibration plots of red fluorescence intensity vs E. coli concentrations, λex/λem=365 nm/610 nm. Adapted with permission from ref.69 Copyright 2015 Elsevier Ltd.
