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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.