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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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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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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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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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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.