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Host vesicles are recruited to the LCV in the absence of LidA and SidM. (Top) Electron micrographs show host vesicles attached to the cytosolic surface of the LCVs at 2 h postinfection of U937 cells with L. pneumophila Lp02 wild-type, Lp02ΔlidA, or Lp02ΔlidAΔsidM (for quantification, see text). (Bottom) Magnification of selected regions (boxed) from the upper panel. The arrows indicate vesicles surrounding the LCV.
