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Since February 2002 the Institute for Clinical Chemistry runs a laboratory for microarray analysis (until now for research only).
Amongst others industrially produced DNA microarrays of the company Affymetrix are used.
They are produced by a photolitographic process thus showing a high density of transcripts per array. For every gene or EST 11 to 20 "Probe pairs", which consist of 25-mer oligonucleotides are represented on the GeneChip.
This system allows fast, simultaneous expression analysis of thousands of genes.
