Strain of an animal that has been inbred by brother-sister matings for more than
\(\pu{20}\) generations, and consequently all the individuals of the strain are more than
\(\pu{98\%}\) genetically identical.
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 768 (https://doi.org/10.1515/pac-2015-1202)