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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
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The horizontal fraction bar was introduced by the Arabs.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.
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The average office desk has 400 times more bacteria on it than a toilet.