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Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

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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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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Sensory receptors. Sensory receptors.
Cranial nerves and their target regions. (Sensory nerves are shown in blue; motor nerves, in red.) Cranial nerves and their target regions. (Sensory nerves are shown in blue; motor nerves, in red.)
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Video: Definitions of stroke volume, preload definition & Factors influencing stroke volume

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