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Vaccines prevent between 2.5 and 4 million deaths every year.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.