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Interference verification test for different silver clusters. (a) Fluorescence spectrum when there is no target; (b) Fluorescence spectrum when HIV-1 is added; (c) Fluorescence spectrum when adding HIV-2; (d) Simultaneous typing of two DNA fluorescence spectra. PBS buffer (20 mM, pH 7.0); Reaction time of the hybridization of the probe and HIV DNAs: 40 min; Work temperature: 37 °C.
