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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.