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Phenotypes Associated with This Genotype
Genotype
MGI:3795904
Allelic
Composition
Lactb2Tg(Igh-Meis1)2770Amb/Lactb2Tg(Igh-Meis1)2770Amb
Genetic
Background
FVB/NJ-Lactb2Tg(Igh-Meis1)2770Amb
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lactb2Tg(Igh-Meis1)2770Amb mutation (0 available); any Lactb2 mutation (20 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mean male death occurs at 40 days with signs of distress appearing 12 to 24 hours prior to death
• lethality is not background dependent and is observed in mice crossed to Mus castaneus, C57BL/6J and BXH2

reproductive system
N
• male mice that survive long enough to reproduce are fertile
• moribund male mice exhibit underdeveloped seminal vesicles

liver/biliary system
• moribund male mice exhibit slightly enlarged livers unlike in wild-type mice
• moribund male mice exhibit microvesicular steatosis unlike in wild-type mice
• moribund male mice exhibit salmon-colored liver with small, pale granules dispersed throughout the organ unlike in wild-type mice

respiratory system
• in male mice just prior to death

growth/size/body
• peripubescent male mice are smaller than normal
• moribund male mice exhibit slightly enlarged livers unlike in wild-type mice

adipose tissue
• moribund male mice exhibit underdeveloped fat pads surrounding the seminal vesicles

behavior/neurological
• just prior to death, male mice exhibit extreme lethargy unlike in wild-type mice

cardiovascular system
• just prior to death, male mice exhibit prominent blood vasculature of the extremities unlike in wild-type mice

endocrine/exocrine glands
• moribund male mice exhibit underdeveloped seminal vesicles

integument
• just prior to death, male mice exhibit scruffy fur unlike in wild-type mice
• just prior to death, male mice exhibit pinkish or purplish skin color unlike in wild-type mice


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
04/16/2024
MGI 6.23
The Jackson Laboratory