JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
An Eppendorf tube containing a small amount of RNA sits in a compartment of a small laboratory Polymerase Chain Reaction (PCR) machine. This will repeatedly heat & cool the sample (thermocycling) to amplify it into a quantity which can be used for the experiments to be carried out with this particular DNA sequence.
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