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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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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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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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Your heart beats over 36 million times a year.