The human body produces and destroys 15 million blood cells every second.
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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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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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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Examples of fermentation
Some examples of variations in killer whales
The conduction system of the heart; traces the path of the electrical impulse that stimulates the he
The surgical nurse assists the client into the correct position
Protective devices: A, abdominal binder; B, arm sling.