If you could remove all of your skin, it would weigh up to 5 pounds.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
How phytochrome acts as a molecular light switch.
A historical timeline of regulatory acts, standards, and organizations
Common negligent acts
Spike Lee (director and producer), When the Levees Broke: A Requiem in Four Acts.
Historical Time Line of Regulatory Acts, Standards, and Organizations
NADH acts as a reducing agent in several reactions