Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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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.
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There are 60,000 miles of blood vessels in every adult human.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
Comparison of the level of skin damage as a result of the three different degrees of burns.
Zhang Huan, To Raise the Water Level in a Fishpond.
A weather map depicting the sea-level pressure distribution for March 4, 1994.