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General Help

Mouse Genome Informatics offers on-line help and staffs a help desk to answer your questions and comments. Please feel free to Contact User Support for any of the following:

  • You can't find the data you're looking for
  • You've found an error on one of our web pages
  • You have a paper you'd like us to curate
  • You need us to create a special report
  • You have data you'd like to submit
  • You are having problems with your web browser. See our Browser Compatibility page first.
  • You have a complaint about or a suggestion for our website
  • You would like to host an MGI workshop at your institution (details)

You can reach us by email, by submitting our Contact User Support form, or at (207) 288-6445.

To direct questions to the mouse genetics community, join mgi-list.

User Help Documentation
MGI-Help: General

You can access complete documentation on MGI query forms from this page or by clicking numerous links from the query forms themselves.

Video tutorials are available on the MGI YouTube channel and from Vimeo.

General topics

MGI Glossary
Mouse Genome Database Overview
General Guidelines for Searching MGI
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Full-text Searching Help
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MGI tutorial (OpenHelix)

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Interpreting Annotations
MGI-Mouse Gene Expression Database (GXD): Our Data Policies - Gene Expression Database (GXD): Our Data Policies
The Gene Expression Database (GXD) collects and integrates the gene expression information in MGI.
  • All data entered into GXD are reviewed by our team of experienced curators.
  • GXD focuses on endogenous gene expression data in wild-type and mutant mice, including reporter data from knock-in experiments. Currently GXD does not include expression data from other types of transgenic animals, chimeras, animals subjected to treatments, or from cultured material.
  • GXD collects data from publications and data submissions for the following assay types: RNA in situ hybridization; Immunohistochemistry; in situ reporter (knock in); RT-PCR; Northern and Western blots.
  • It is our curatorial policy to annotate expression patterns from publications based solely on what is written in the manuscript; we do not interpret images presented within papers. We are happy to accept more detailed descriptions of expression patterns from authors and will update database entries accordingly.
  • When we have permission from publishers or providers we include images. All images are displayed with citation information and with copyright.
  • Selected sets of RNA-Seq data that are in keeping with GXD's scope have been imported from the Expression Atlas at the EMBL-EBI. We processed these files further and curated the sample metadata.

Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
MGI 6.23
The Jackson Laboratory