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Size-dependent cytotoxicity of silver nanoparticles to Azotobacter vinelandii: Growth inhibition, cell injury, oxidative stress and internalization

Fig 1

The characterization of different sizes of silver nanoparticles by TEM.

TEM images of (a) nano-Ag 10 and (c) nano-Ag 50. Frequency of size distribution for (b) nano-Ag 10 and (d) nano-Ag 50; scale bar: 100nm.

Fig 1

doi: https://doi.org/10.1371/journal.pone.0209020.g001