PCR

British  

abbreviation

1. polymerase chain reaction: a technique for rapidly producing many copies of a fragment of DNA for diagnostic or research purposes

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PCR Cultural  

1. A laboratory technique that can amplify the amount of DNA from a tiny sample to a large amount within just a few hours. Theoretically, PCR can take one molecule and produce measurable amounts of identical DNA in a short period of time. It is used in DNA fingerprinting and DNA sequencing.

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Discover More

An enzyme used in this process was originally found in bacteria in hot springs.

Example Sentences

Despite these signs, laboratory testing using PCR and serology ruled out Nipah virus.

From Science Daily • Feb. 1, 2026

"The TGA is aware that many companies responsible for sunscreens manufactured using this base formulation relied on testing by PCR Corp to support their SPF claims."

From BBC • Sep. 30, 2025

At-home tests should still work to detect this variant, but PCR tests that doctors can order are more accurate.

From Salon • Jun. 11, 2025

"The trouble with PCR is that you have to think of the viruses that might be causing an infection and do a separate test for each and every one," she says.

From BBC • Apr. 29, 2025

Political authority was particularly concentrated in the hands of the general secretary of the PCR, Nicolae Ceausescu, who was also the head of state.

From Area Handbook for Romania by Bernier, Donald W.