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The thermal cycler (also known as a thermocycler, PCR machine or DNA amplifier) is a laboratory apparatus most commonly used to amplify segments of DNA via the polymerase chain reaction (PCR). [1] Thermal cyclers may also be used in laboratories to facilitate other temperature-sensitive reactions, including restriction enzyme digestion or rapid ...
A strip of eight PCR tubes, each containing a 100 μL reaction mixture Placing a strip of eight PCR tubes into a thermal cycler. The polymerase chain reaction (PCR) is a method widely used to make millions to billions of copies of a specific DNA sample rapidly, allowing scientists to amplify a very small sample of DNA (or a part of it) sufficiently to enable detailed study.
The thermal cycler is also able to rapidly heat and chill samples, thereby taking advantage of the physicochemical properties of the nucleic acids and DNA polymerase. The PCR process generally consists of a series of temperature changes that are repeated 25–50 times.
At present, mass diagnoses from a great number of samples cannot yet be achieved by HDA, whereas PCR reactions carried out in thermal cycler that can hold multi-well sample plates allows for the amplification and detection of the intended DNA target from a maximum of 96 samples. The cost of purchasing reagents for HDA are also relatively ...
A quantitative PCR instrument [1] is a machine that amplifies and detects DNA. It combines the functions of a thermal cycler and a fluorimeter, enabling the process of quantitative PCR. The first quantitative PCR machine was described in 1993, [2] and two commercial models became available in 1996.
The reaction mix includes dNTPs, primers, template RNA, necessary enzymes, and a buffer solution. The reaction mix is added to a PCR tube for each reaction, followed by template RNA. The PCR tubes are then placed in a thermal cycler to begin cycling. In the first cycle, the synthesis of cDNA occurs.