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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.
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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Survivorship curve for the North American beaver.
Terrestrial plants and animals can be characterized by analogous pathways for water gain and loss.
American Children with Working Parents
The remarkably complete skull of a 3-year-old Australopithecus girl; the fossil is 3.3 million ...
Top Eleven Countries in Year 2009 According to Three Different Measures
Seven students have applied for merit scholarships. This year 3 merit scholarships were ...