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Mouse colony spreadsheet template

A clean starting point for tracking a mouse colony in Excel, Google Sheets or Numbers. It's laid out the way labs actually work, and it imports into CageCard in one step if you outgrow the spreadsheet.

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A sheet each for lines, cages, mice and euthanized mice, with a read-me, drop-down lists and example rows.

One row per mouse with its cage's details, for any spreadsheet program.

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What's in the Excel template

Lines
One row per line (strain): its name, the prefix for its cage names, and its genes.
Cages
One row per cage: line, holding or breeding, set-up date, litter born, room, rack and owner.
Mice
One row per living mouse: cage, sex, date of birth, ear notch, sire and dam, and a genotype column per gene.
Euthanized
Optional: your euthanasia log, with dates, counts and reasons, for protocol counts.

The CSV's columns

CageLineCage typeSet upRoomRackOwnerMouse IDSexDOBEar notchSireDamParent cageMarked for cullNotesGenotype: Aim2Genotype: CH25H
Example-1Example lineBreeding2026-01-10Room 210Rack AEX-001M2025-10-01RHETHET
Example-1Example lineBreeding2026-01-10Room 210Rack AEX-002F2025-10-03LKOKO

Genotypes can be WT, HET or KO, +/+, +/− or −/−, or any call you use, like Cre+. Add a "Genotype: gene" column for each gene.