Size-dependent cytotoxicity of silver nanoparticles to Azotobacter vinelandii: Growth inhibition, cell injury, oxidative stress and internalization
Fig 3
The effect of AgNPs on the cell morphology of A. vinelandii observed by SEM (upper) and TEM (lower).
(a) SEM and (b) TEM images of a control group in which no AgNPs are added; (c) SEM and (d) TEM images of nano-Ag 10 at a concentration of 10 mg/L; (e) SEM and (f) TEM images of nano-Ag 50 at a concentration of 100 mg/L. All treatment groups were exposed for 12 h.