The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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The horizontal fraction bar was introduced by the Arabs.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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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.
Sickle cell anemia. The clinical manifestations of sickle cell anemia result from pathologic changes
Adult stem cells offer hope for cell therapy to treat diseases in the future