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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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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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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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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.