Image description: Affectionately referred to as “Mr. Cycle,” this device from the collection of the Smithsonian National Museum of American History was the first prototype polymerase chain reaction (PCR) machine.
PCR was a revolutionary laboratory technique developed in 1983 that allows scientists to quickly and inexpensively copy segments of DNA. It’s also an important tool in the field of biotechnology, which is the use of biological processes or organisms to create products or technologies for human use.
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