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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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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.