Figure 8From: Vesicle-independent extracellular release of a proinflammatory outer membrane lipoprotein in free-soluble formElectron micrographs of the vesicle preparations from filtrates. Filtrates from experiments studying in vitro AaPAL release into serum were subjected to vesicle preparation and subsequent electron microscopy. The filtrates were: A. actinomycetemcomitans D7SS at 8 h (Panel A), D7SS-p at 8 h (Panel B), No bacteria control at 2 h (Panel C). The vesicle preparation from A. actinomycetemcomitans D7SS whole cells (positive control) shows vesicles of different sizes indicated by arrows (Panel D). Bars; 0.2 μm.Back to article page