Learn to use CleanEx, an online database of genome-wide gene expression data. In CleanEx users can access human and mouse expression data by approved gene symbols, or by searching with MeSH terms for experiments representing specific biological conditions. Expression data are presented in such a way that they can be compared to each other even if they were obtained using different methods. The CleanEx Target database contains sequence and quality information on microarray probes and sequence tags associated with a gene. The resource also includes data analysis tools for identification of over- or underexpressed genes. If your research involves gene expression data, then learn to use CleanEx to help facilitate data analysis.

You will learn:

  • to find information on transcript abundance and expression targets by gene names
  • to extract numerical expression data from CleanEx
  • to search for datasets or subsets representing biological conditions of interest, using MeSH terms
  • to identify over- or underexpressed genes in a dataset, and examine the expression pattern of these genes in other datasets
  • to identify genes whose expression levels correlate with a biological condition across multiple datasets


This tutorial is a part of the tutorial group Expression resources. You might find the other tutorials in the group interesting:

Functional Glycomics Gateway: The home for Functional Glycomics research

Allen Mouse Brain Atlas: Mapped gene expression data in mouse brain

miRBase: microRNA sequences, targets and gene nomenclature

DBTSS: Database of Transcriptional Start Sites

Alternative Splicing and Transcript Diversity (ASTD) database: A bioinformatics resource for alternative splice events and transcripts for human, mouse, and rat

GENSAT: Provides an extensive amount of high quality images of gene expression in the central nervous system of the mouse.

Gene Expression Omnibus (GEO): A gene expression/molecular abundance repository and a curated, online resource for gene expression data

ArrayExpress: A public repository for microarray gene expression data at the EBI


Expression : This category may contain various expression data collections, annotation tools, or repositories of expression data.


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