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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Everyone has one nostril that is larger than the other.
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Medication errors are three times higher among children and infants than with adults.
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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").