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. Author manuscript; available in PMC: 2015 Nov 13.
Published in final edited form as: Environ Sci Technol. 2015 Aug 12;49(17):10642–10650. doi: 10.1021/acs.est.5b01841

Figure 2.

Figure 2

Gold nanoparticle association with bacterial cells is directly observable and depends on cell LPS content. (a) Cells isolated (sorted) from the total cell population after exposure to MPNH2-AuNPs. (b) Unsorted cells after exposure to MPNH2-AuNPs. In panels a and b the arrows point to AuNPs associated with the cells as confirmed by hyperspectral imaging. (c) Association of MPA- or MPNH2-AuNPs with Shewanella cells with varying LPS content (indicated by 8-amino-2-keto-3-deoxy-D-manno-octonate (8-aminoKdo) content of lyophilized cells) quantified by flow cytometry. Error bars (representing one standard deviation, n = 3) are smaller than the symbol in some cases.