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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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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 first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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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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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.