1. Select the Mice you would like to edit and click on the "Edit Mice" tab (You'll be forwarded to the Group Edit Mice Page)
2. On the Group Edit Mice page, select the Mouseline from the drop down in the table first. You can then select the Strain after --- the strain drop down list will refresh automatically to only show you the strains associated with the mouseline you previously selected.
3. Select all mice that will contain this strain in the table below.
4. To save your changes, click on either green "save + stay" button to remain on the same page or the "save + back to list" button on your screen to return to your mousline list.
You should now see the Strain populate in the associated column for all mice that were selected.