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Mamm Genome. 1998 Jan;9(1):15-9.

A new inbred strain JF1 established from Japanese fancy mouse carrying the classic piebald allele.

Author information

  • 1Mammalian Genetics Laboratory, National Institute of Genetics, Shizuoka-ken, Japan.

Erratum in

  • Mamm Genome 1998 Apr;9(4):344.


A new inbred strain JF1 (Japanese Fancy Mouse 1) was established from a strain of fancy mouse. Morphological and genetical analysis indicated that the mouse originated from the Japanese wild mouse, Mus musculus molossinus. JF1 has characteristic coat color, black spots on the white coat, with black eyes. The mutation appeared to be linked to an old mutation piebald (s). Characterization of the causative gene for piebald, endothelin receptor type B (ednrb), demonstrated that the allele in JF1 is same as that of classic piebald allele, suggesting an identical origin of these two mutants. Possibly, classic piebald mutation was introduced from the Japanese tame mouse, which was already reported at the end of the 1700s. We showed that JF1 is a useful strain for mapping of mutant genes on laboratory strains owing to a high level of polymorphisms in microsatellite markers between JF1 and laboratory strains. The clarified genotypes of JF1 for coat color are "aa BB CC DD ss".

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