But about three-quarters of heart attacks and strokes are caused by plaque fracturing from the side of the artery.

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The plaque is located on the front left side of the rover's deck.

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James Nicoll, a neuropathologist at the University of Southampton, performed autopsies on nine patients who received a plaque-removing vaccine Elan and Wyeth tried in an earlier trial. (Side effects torpedoed that approach.) He found that the vaccine patients had dramatic reductions in plaque compared to a control group.

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