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. 2021 Nov 10;11(11):2083. doi: 10.3390/diagnostics11112083

Figure 5.

Figure 5

(A) Principle of SPR biosensor for detection of AIV H5N1: (a) Streptavidin immobilization; (b) Biotinylated apTable; (c) Virus detection. 2012. @MDPI [193]); (B) Schematic illustration of the SPR signal before and after the analyte flow (Adapted from Omar et al., Scientific Reports, 2020 [197]); (C) Schematic demonstration for the preparation of DNA–AgNP conjugates through one-step conjugation chemistry and a sandwich strategy for HIV DNA detection. Red (DNA1) and green (DNA2) strands represent 2 probe DNAs that can hybridize with HIV DNA (Adapted with permission from Liu et al., Analyst, 2012 [200]).