Keyword Analysis & Research: gene expression data sets

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Where can I find gene expression datasets?

GEO DataSets. This database stores curated gene expression DataSets, as well as original Series and Platform records in the Gene Expression Omnibus (GEO) repository.

What are the different types of gene expression data?

The expression levels for analysis are recorded by using microarray-based gene expression profiling. Gene-sample, gene-time, and gene-sample-time are three types of microarray data. In sequence analysis, DNA, RNA, or peptide sequences are operated by using several analytical methods.

How is gene expression data represented in microarray?

Gene expression data is usually represented as an n × m matrix, where n is the number of genes and m is the number of time points or samples. Microarray features, or gene transcripts, are the rows of the expression matrix and are represented as vectors.

Where does the gene expression data in Desmedt come from?

The gene expression data in Desmedt is derived from 198 breast cancer patients. Patients were diagnosed between 1980 and 1998 (median follow-up 13.6 years) with a median age of 47. Microarray data were obtained using the Affymetrix U133a Genechip.

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