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Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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Vaccines prevent between 2.5 and 4 million deaths every year.

Development of the human brain. Development of the human brain.
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Video: Ear Virtual Tour Animation

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