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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.
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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
A review of photosynthesis.
Object and Word Recognition After Midsegments of Lines Have Been Eliminated
A farmer with a pitchfork, wearing a hat identifying him as a Granger, warns of an oncoming “Consoli
Identification of the numbers in the Word Problem
An eager graduate student at Carleton, counts geese in the marshes off the Ottawa river. In ...
Acetylation and deacetylation in open and closed chromatin structure