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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.