In the 1930s, researchers discovered that influenza viruses could be grown inside which medium, still used today?
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In 1931, Ernest William Goodpasture discovered that viruses could be grown in embryonated chicken eggs, a breakthrough that enabled mass production of influenza vaccines. To this day, the vast majority of seasonal flu shots are produced using millions of pathogen-free chicken eggs every year. It takes about one egg to produce a single dose of the seasonal vaccine. Photo: Airman Joseph R Schmitt, U.S. Navy, Wikimedia Commons, Public domain.
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Source: Wikipedia (CC BY-SA)
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