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PCR: Clinical Diagnostics and Research (Paperback, Softcover reprint of the original 1st ed. 1992)
Loot Price: R2,889
Discovery Miles 28 890
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PCR: Clinical Diagnostics and Research (Paperback, Softcover reprint of the original 1st ed. 1992)
Series: Springer Lab Manuals
Expected to ship within 10 - 15 working days
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Total price: R2,909
Discovery Miles: 29 090
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In 1985, Kary Mullis was driving late at night through the
flowering buckeye to the ancient California redwood forest,
cogitating upon new ways to sequence DNA. Instead he came upon a
way to double the number of specific DNA modules, and to repeat the
process essentially indefinitely. 1 He thought of using two
oligonucleotide sequences, oppositely oriented, and a DNA
polymerase enzyme, to double the number of DNA targets. Each
product would thene become the target for the next reaction,
effectively yielding a product which doubled in quantity with each
repeated cycle. Like the chain reaction leading to nuclear fission,
with each cycle event each initial reactant (neutron or DNA
molecule) yields two similar products, each of which can serve as
the initial reactant. The invention of this exponentially
increasing amplification system quickly became known as the
polymerase chain reaction (PCR). The tremendous sensitivity of PCR
ultimately resides in the necessity for each of two specific
oligonucleotide annealing reactions to occur at the same time in
the proper orientation. The DNA annealing reaction is a very
specific reaction. Single genes have been detected by hybridization
of a DNA probe to chromosome preparations together with sensitive
fluorescence microscopy. This is the equivalent to detecting a gene
present in a single copy per cell genome. It is the combination of
two such specific annealing reactions which makes possible the
amplification needed to detect a single molecule with a specific
DNA sequence in over 100,000 cell genomes.
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