Silver, Gold, and Silver-Gold Bimetallic Nanoparticle-Decorated Dextran: Facile Synthesis and Versatile Tunability on the Antimicrobial Activity

Figure 6

The optical images of Xoo colonies incubated on silver NPs/dextran (a), sample S7 (b), sample S5 (c), sample S3 (d), gold NPs/dextran (e), and the blank control sample (f).

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