Medical term:
amplification
amplification
[am″plĭ-fĭ-ka´shun]the process of making larger, such as the increase of an auditory or visual stimulus, as a means of improving its perception.
DNA amplification artificial increase in the number of copies of a particular DNA fragment into millions of copies through replication of the segment into which it has been cloned, a type of nucleic acid amplification.
gene amplification a process by which the number of copies of a gene is increased in certain cells because extra copies of DNA are made in response to certain signals of cell development or of stress from the environment. In humans this process is seen most often in malignant cells.
nucleic acid amplification amplification of a specific nucleic acid sequence, such as to test for presence of a given virus or bacteria in a sample. Types include DNA amplification, ligase chain reaction, and polymerase chain reaction.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
am·pli·fi·ca·tion
(am'pli-fi-kā'shŭn),The process of making larger, as in increasing an acoustic or visual stimulus to enhance its perception.
[L. amplificatio, an enlarging]
Farlex Partner Medical Dictionary © Farlex 2012
amplification
(ăm′plə-fĭ-kā′shən)n.
1. The act or result of amplifying, enlarging, or extending.
2. Physics
a. The process of increasing the magnitude of a variable quantity, especially the magnitude of voltage, power, or current, without altering any other quality.
b. The result of such a process.
3. Genetics The process by which extra copies of a gene or a DNA sequence are formed.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
amplification
An in vivo (as in the fragile X syndrome) or in vitro (as in cloning or PCR) increase in the number of copies of a specific gene or DNA sequence of interest.Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
amplification
Molecular biology An in vivo–as in the fragile X syndrome or in vitro–as in cloning or PCR ↑ in the number of copies of a specific gene or DNA sequence of interest. See Cloning, DNA amplification, Exon amplification, Extreme amplification, Gene amplification, Linked linear amplification, PCR, PCR amplification of specific alleles, Solid phase amplification.McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
am·pli·fi·ca·tion
(am'pli-fi-kā'shŭn)1. The process of making larger, as in increasing an auditory or visual stimulus to enhance its perception.
2. molecular biology Process of increasing the number of nucleic acid copies in a sample to millions within a short period.
[L. amplificatio, an enlarging]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
amplification
The production of extra copies of a DNA sequence. These may be within the chromosomal sequence or outside it.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
Amplification
A process by which something is made larger. In clotting, only a very few chemicals are released by the initial injury; they result in a cascade of chemical reactions which produces increasingly larger quantities of different chemicals, resulting in an appropriately-sized, strong fibrin clot.
Mentioned in: Hemophilia
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
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