In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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Vaccines prevent between 2.5 and 4 million deaths every year.
Results from sequential study of two cohorts tested at three ages and at three different points in t
Leonardo da Vinci, Study of a Woman's Head or of the Angel of the Vergine delle Rocce.
The results from West and Crook's study of memory for telephone numbers