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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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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Vaccines prevent between 2.5 and 4 million deaths every year.