American Oswald Avery isolated pure DNA for the first time, what he called the transforming factor
In 1940, American Oswald Avery precipitates a pure sample of what he calls the transforming factor; he has…
DNA was discovered in the sperm of trout from the Rhine River by Swiss chemist Frederick Miescher
In 1869, DNA is discovered in the sperm of trout from the Rhine River by Swiss chemist Frederick…
DNA evidence of plague found in Europe
Evidence from 4,800 to 3,700 years ago suggested the plague-causing bacterium Yersinia pestis, first arrived in Europe during…
Roman emperor Justinian ordered travelers from plague infected regions isolated
Emperor Justinian I (482-565 BCE) contracted the plague, but survived. A series of laws were enacted against those…