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Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

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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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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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