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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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Green tea is able to stop the scent of garlic or onion from causing bad breath.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

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Video: Nucleic acid digestion -small intestine

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