Diagnosis
by Polymerase Chain Reaction Polymerase chain reaction (PCR) is a molecular technique used in diagnostics to make multiple copies of a specific DNA sequence. It is used to accurately identify and detect the presence of a specific DNA sequence within a sample, such as a virus, bacteria, or gene. PCR is important for diagnosing infectious diseases, verifying paternity and identifying bacterial strains, as well as for forensic identification and genetic engineering. PCR is a highly sensitive and accurate method, allowing for the detection of even trace amounts of DNA. This makes it a powerful and versatile technique, with applications in many fields.
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