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Did you know?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Did you know?
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
Did you know?
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Did you know?
Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.