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Selectivity analysis of long-period fiber grating (LPFG) biosensor. (A) Representative spectra recorded in PBS before specificity test, after incubation in two non-specific VLPs (hemagglutinin protein (HA) VLP and Rabbit hemorrhagic disease virus (RHDV) VLP) and specific norovirus VLPs. (B) Resonance wavelength shifts for left resonance for two negative controls (HA VLP and RHDV VLP) and positive control (norovirus VLP).
