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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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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.