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Morphological characterization of P. gingivalis OMVs. (A) Illustration of OMV preparation. (B) The images of isolated P. gingivalis OMVs from culture supernatant were captured by TEM. Scale bars = 200 nm, 100 nm, and 50 nm. (C) The particle size distribution of isolated P. gingivalis OMVs was measured by dynamic light scattering. (D) The protein contents of P. gingivalis OMVs and P. gingivalis are shown by silver staining.
