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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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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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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.