1.   Instead of bypassing seriously narrowed arteries, as is done to prevent heart attacks, surgeons actually open the carotids and clean them out.

2.   Over a period of years, these cells become swollen with fats and cholesterol, forming the basis of the waxy plaque that narrows arteries.

3.   Plaques, consisting of fats and connective tissue, can dangerously narrow arteries and restrict blood flow.

4.   Some researchers are hoping to halt the formation of rough deposits that narrow arteries and precipitate heart attacks and strokes.

5.   The first camp suspects that the bacterium is fueling the process of atherosclerosis that damages tissue and narrows the arteries.

6.   When oxygen levels are high, hemoglobin narrows the arteries, slowing the flow of blood.

7.   When fatty deposits narrow the arteries, too little blood reaches the heart, depriving its cells of oxygen.

8.   High cholesterol can narrow the arteries and raise the risk of heart disease.

9.   Regular aerobic exercise fights vascular disease, including fat clogs that narrow the arteries, said Montague, who is not connected to the study.

10.   Researchers found that elderly people with high levels of homocysteine in their bloodstreams were more likely to have narrowed arteries in their necks.