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Morphology and size of OMVs from WT and mutant E. coli. (a–d) Transmission electron microscopy observation of E. coli BW25113, rfaC knockout (ΔrfaC), rfaG knockout (ΔrfaG), and rfaL knockout (ΔrfaL) strains, respectively. The yellow arrows show the example of observed OMV.
