defined:

An increase in the number of copies of any particular piece of DNA. A tumor cell amplifies, or copies, DNA segments naturally as a result of cell signals and sometimes environmental events.

explained:

Listen to a detailed explanation.

Dr. Lawrence Brody, of the National Human Genome Research Institute's Genetic and Molecular Biology Branch, defines gene amplification.

related
terms:

cell, deoxyribonucleic acid (DNA), gene, oncogene

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