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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
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Cyanide works by making the human body unable to use oxygen.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.