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The familiar sounds of your heart are made by the heart's valves as they open and close.

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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

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Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Brain Brain
Image of Brain Structures Image of Brain Structures
Australopithecus sediba shares small brain size with other members of Australopithecus but also has Australopithecus sediba shares small brain size with other members of Australopithecus but also has
Drugs Used for Urinary Tract Infections Drugs Used for Urinary Tract Infections
How body makes blood flow more into brain instead of foot? How body makes blood flow more into brain instead of foot?
Is the brain a liar? Is the brain a liar?
Video: Hormonal regulation of blood pressure - RAA system

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