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Invasion of airway epithelium (red) by live B. multivorans J-1 (green) observed by confocal microscopy. (A) Confocal x-z scan of airway epithelium. (B) Confocal x-y scan of the same culture. (C) Confocal x-z scan of cytochalasin D-treated airway epithelium. Colocalization of live bacteria within live epithelial cells is seen as yellow-stained areas. Bars, 10 μm. Arrows indicate apical cell surface of airway epithelia.
