Skip Navigation
NCI banner National Cancer Institute U.S. National Institutes of Health National Cancer Institute
SAGE Genie
  • Human SAGE Genie Tools
  • Downloads
  • Digital Karyotyping
Cancer Genome Characterization Initiative

Visit the database of genomic characterization data for multiple tumor types.

mouse mSAGE Expression Matrix (mSEM)

What the mSAGE Expression Matrix Can Do

The mSAGE Expression Matrix displays gene expression in mouse tissues throughout stages of development. Each library is represented as a circle placed in a matrix defined by tissue and developmental stage, and the shading of each circle represents a different level of gene expression. Gene expression levels are based on the analysis of counts of SAGE tags, which are either "short" (10 bp), including "extracted short" (10 bp extracted from 17bp tag), or "long" (17 bp).

Other visual displays accessed through the mSEM page are the Digital Northern (gene expression per individual library) and the Ludwig Transcript Viewer (showing shorter alternative polyadenylated and internally primed transcripts).

Need help? If this is your first time using the mSEM and you need help, please visit SAGE Help.

Use the mSAGE Expression Matrix

  • Find the Best Tag for a Gene

    1. Select:

    2. Enter a value for one of the following criteria and click GO:
    *(e.g. 'NM_008181')

    *Associates the accession number to a UniGene cluster and then finds the best tag for this gene.

  • For Batch Query, Please Click Batch Best Tag Finder For Genes

  • Find the Best Tag for an Accession Number
    Select: or


    *Finds the most 3' virtual tag within the accession number.

  • Find the Best Gene for a Tag

  • For Batch Query, Please Click Batch Best Gene Finder For Tags