This standard specifies the naming rules for experimental animal strains of mice and rats, including the genetic classification of experimental animals, laboratory codes, inbred strains, inbred strains from multiple sources, homologous mutation inbred strains, homologous strains and human Nomenclature of inbred and segregated inbred lines, nomenclature of closed groups (outbred groups) and hybrid groups. This standard applies to experimental animals mouse, rat strain naming.