1. Automated polymerase chain reaction in capillary tubes with hot air.
- Author
-
Wittwer CT, Fillmore GC, and Hillyard DR
- Subjects
- Autoanalysis methods, DNA, Bacterial genetics, Glass, Globins genetics, Humans, Kinetics, Nucleic Acid Denaturation, Taq Polymerase, Air, Autoanalysis instrumentation, DNA-Directed DNA Polymerase, Gene Amplification, Hot Temperature
- Abstract
We describe a simple, compact, inexpensive thermal cycler that can be used for the polymerase chain reaction. Based on heat transfer with air to samples in sealed capillary tubes, the apparatus resembles a recirculating hair dryer. The temperature is regulated via thermocouple input to a programmable set-point process controller that provides proportional output to a solid state relay controlling a heating coil. For efficient cooling after the denaturation step, the controller activates a solenoid that opens a door to vent hot air and allows cool air to enter. Temperature-time profiles and amplification results approximate those obtained using water baths and microfuge tubes.
- Published
- 1989
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