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Author Question: The nuclear symbol of helium, He, is also the symbol for designating a(n) ________. (Read 38 times) |
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.