Available Strain Details

Strain Information
Common Strain Name: Ahr null Pricing and Ordering Information
Strain Nomenclature: B6.129-Ahrtm1Gonz/Nci
Animal State: Frozen Embryo
Release Category (Required for MTA form): B1

Strain Description: Livers of Ahr(-/-) mice are about 50% the size of normal livers and exhibit hepatic portal hypertension. Mice have enlarged hearts (cardiomyopathy). There is decreased accumulation of B lymphocytes in the lymph nodes and spleen but the thymus is normal. Ahr(-/-) mice are unresponsive to dioxin-induced catabolism of foreign compounds. They also have higher incidences of liver tumors and gastric polyps than do wild-type mice. Although about half of the original homozygous Ahrtm1Gonz (Ahr -/-) mice died shortly after birth the survivors reached maturity and were fertile. Breeding these survivors produces 100% survival of littermates, the neonatal phenotype apparently being lost.
Mutation Information
Mutation Type: Targeted
Gene Name: Aryl-hydrocarbon receptor
Gene Symbol: Ahr
Transgene Name:
Transgene Symbol:
Promotor Name:
Promotor Symbol:
Current Genetic Background: B6.129
Approx. Generation:
Organ Site: GI, Skin
Additional Information
Cryopreservation Mating Scheme: The cryopreservation mating scheme is C57BL/6 females x heterozygous males. When maintained as a live colony, breeder pairs were distributed as a heterozygote (male or female) x C57BL/6 mate (male or female).
Genotyping Information: Protocol 2: Allele: Ahr<tm1Gonz>
Donating Investigator: Dr. Jerrold Ward

Key Reference: Fernandez-Salguero P, Pineau T, Hilbert DM, McPhail T, Lee SS, Kimura S, Nebert DW, Rudikoff S, Ward JM, Gonzalez FJ. 1995. Immune system impairment and hepatic fibrosis in mice lacking the dioxin-binding Ah receptor. Science.268:722-6. PMID: 7732381 [Pubmed Abstract]