Terminology Service for NFDI4Health

polymerase chain reaction

Go to external page http://purl.obolibrary.org/obo/OBI_0000415


PCR is the process in which a DNA polymerase is used to amplify a piece of DNA by in vitro enzymatic replication. As PCR progresses, the DNA thus generated is itself used as a template for replication. This sets in motion a chain reaction in which the DNA template is exponentially amplified.