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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.
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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
The American paddlefish is poached for its eggs
Assessing for Chvostek's Sign
Defibrillator. Defibrillators are devices that supply a voltage charge to the heart in the hope of r
Human embryonic stem cells forming rosettes, a sign of neural differentiation
Locations of Broca’s Area, Wernicke’s Area, and Associated Areas Involved in Language Deficits
Research that has examined babies' ability to recognize themselves develops in the 2 year