Monday, 12 March 2012

DNA microarray

A DNA microarray (also frequently accepted as gene chip, DNA chip, or biochip) is a accumulating of diminutive DNA spots absorbed to a solid surface. Scientists use DNA microarrays to admeasurement the announcement levels of ample numbers of genes accompanying or to genotype assorted regions of a genome. Each DNA atom contains picomoles (10−12 moles) of a specific DNA sequence, accepted as probes (or reporters). These can be a abbreviate area of a gene or added DNA aspect that are acclimated to blend a cDNA or cRNA sample (called target) beneath high-stringency conditions. Probe-target admixture is usually detected and quantified by apprehension of fluorophore-, silver-, or chemiluminescence-labeled targets to actuate about affluence of nucleic acerbic sequences in the target.

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