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Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

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There are 20 feet of blood vessels in each square inch of human skin.

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Parts of a muscle Parts of a muscle
(B) Urine collection cup; (C) 24-hour urine container. (B) Urine collection cup; (C) 24-hour urine container.
Use caution if using a steel scraper to remove a gasket from aluminum parts. It is best to use a ... Use caution if using a steel scraper to remove a gasket from aluminum parts. It is best to use a ...
Parts or anatomy of a Knife Parts or anatomy of a Knife
Summary of Functions of Principal Parts of the Brain Summary of Functions of Principal Parts of the Brain
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Video: Renin/Angiotensin (water gain from urine & Na ion and water reabsorption)

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