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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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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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Thyroid conditions may make getting pregnant impossible.
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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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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.