Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
heart model front
Coupling of electrical and mechanical activity in the mammalian heart.
Lyme Disease Concept Map
The conduction system of the heart.
Mechanisms of Action of Drugs Used for Heart Failure
Penetrating Trauma to the Heart (Nail) as Seen on Lateral Chest X-Ray