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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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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
The cotton-top tamarin (Saguinus oedipus), also known as the Pinche tamarin, is a small New W
Atmospheric CO2 Concentrations Increased Very Rapidly during the Last 200 Years
Researchers must inform potential participants of a study's procedures so that consent may be o
Common Functional Groups Found in Biomolecules
Top Prescriptions for Children Under 17 Years of Age (2002–2010)
The Z lens, which was developed by Zaidel to study functional asymmetry in split-brain patients. It ...