DNA gene-expression microarray

Definition / meaning of DNA gene-expression microarray

A process that allows thousands of pieces of DNA that are fixed to a glass slide to be analyzed at one time. It is used to identify the genes (pieces of DNA) in specific cells or tissue that are actively used to make RNA, which then may be used to make proteins.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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