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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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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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The longest a person has survived after a heart transplant is 24 years.
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The average office desk has 400 times more bacteria on it than a toilet.