A PCR (Polymerase Chain Reaction) machine is an essential tool used in molecular biology laboratories to amplify small segments of DNA or RNA. By making millions of copies of a specific DNA sequence, PCR machines enable detailed genetic analysis, diagnostic testing, and research applications. The PCR process involves cycles of heating and cooling, which are controlled by the machine, allowing for the denaturation, annealing, and extension of DNA strands. PCR machines are widely used in areas such as medical diagnostics (including COVID-19 testing), genetic research, forensic analysis, and cloning.
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