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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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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
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The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.
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The horizontal fraction bar was introduced by the Arabs.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.