Developed by C.C. Little in 1921, from a mating of Miss Abby Lathrop’s stock that also gave rise to strains C57BR and C57L. Strains 6 and 10 separated about 1937. To The Jackson Laboratory in 1948 from Hall. To NIH in 1951 from The Jackson Laboratory at F32. To Charles River in 1974 from NIH.

Note: We also offer the C57BL/6-Elite Mouse with a VAF/Elite® health profile (bred in US).

Coat Color


MHC Haplotype


Ideal For:

General multipurpose model, diet-induced obesity, transgenic/knockout model development, safety and efficacy testing, immunology

Strain Code:


Informational Resources: C57BL/6 Mouse

Control Data

Diet Information for Enhancing or Expressing a Desired Disease Condition:

I need to...

Precondition my C57BL/6 mice.

Our animals can be fed a specialized diet or aged to a certain timepoint in order to meet your specific research requirements.

Pre-identify my C57BL/6 mice.

Our Pre-ID™ services enable you to receive animal models that have been identified with the codes you provide us.