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Fig. 4
Trapping of injected bacterium. (a) A diffusing bacterium (purple arrow) is (b-d) trapped, pushed against and moved away from the endothelium (red line in a). This seems to activate an immune cell (green arrowheads), which moves towards the contact point (c-f). Repeated contact with the endothelium seems to again attract the attention of the crawling cell, which (g-i) finally moves into the vein. The total duration of experiment is ~2 min. Scale bar, 10 µm. Experiment was repeated at least 4 times.
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Full text @ Nat. Commun.