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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.