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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.

General topics

MGI Glossary
Mouse Genome Database Overview
General Guidelines for Searching MGI
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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.
  • GXD's primary emphasis is on endogenous gene expression during mouse development.

  • Data are acquired from the literature by our curatorial staff and via direct submission from large-scale data providers, as well as individual labs. New expression data are made available on a weekly basis.

  • GXD currently collects detailed expression data from the following assay types: RNA in situ hybridization; Immunohistochemistry; in situ reporter (knock in); RT-PCR; Northern and Western blots; and RNase and Nuclease S1 protection assays

  • It is our curatorial policy to annotate expression patterns 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.

  • 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, conditional knock-outs, chimeras, animals subjected to treatments, or from cultured material.


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Tumor Biology (MTB), Gene Ontology (GO), MouseCyc
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Send questions and comments to User Support.
last database update
12/09/2014
MGI 5.20
The Jackson Laboratory