# Add track for showing which regions in mouse/rat correspond to human regions to the mapping figure

# Tags

* assigned: zsloan
* priority: medium
* type: feature-request
* status: open, in progress
* keywords: mapping

# Description

The idea is to add a new track to mouse/rat mapping figures that provides links to the corresponding region for humans in the UCSC Genome Browser. 

This can be done using these UCSC chain files. Links to the files and an explanation about their format are below:
- Help file: https://genome.ucsc.edu/goldenPath/help/chain.html
- Mouse reference: http://hgdownload.cse.ucsc.edu/goldenpath/mm10/liftOver/
- Human reference: http://hgdownload.cse.ucsc.edu/goldenpath/hg38/liftOver/