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Author Question: The genes for amyloid precursor protein, presenilin 1, and presenilin 2 account for over 50 percent ... (Read 44 times) |
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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There are 20 feet of blood vessels in each square inch of human skin.
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There are approximately 3 million unintended pregnancies in the United States each year.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.