Gene symbols in strain names are brief and intended to convey essential information concerning the genotype of the strains or stocks. The symbols usually represent an abbreviation of the gene name and the way in which the strain or stock is maintained in a colony.
Nonmutant controls are available from the same strain.
When a mutation is maintained on an inbred strain background by mating homozygotes together, the introduced gene symbol is given twice. Nonmutant controls from a related strain must be used. Nonmutant controls are available from the same strain. For more detailed information refer to the Lane List of Mutations and Mutant Stocks of the Mouse. The Jackson Laboratory.