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Phenotypes Associated with This Genotype
Genotype
MGI:3045535
Allelic
Composition
Mfge8tm1Osa/Mfge8tm1Osa
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mfge8tm1Osa mutation (1 available); any Mfge8 mutation (22 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• ability of macrophage to engulf apoptotic cells is impaired
• splenomegaly develops with age
• by 40 weeks spleen weight is 3X control
• 2-3 times more lymphocytes in spleen but normal B cell to T cell ratio
• enlarged follicular zones
• enlarged white pulp

immune system
• ability of macrophage to engulf apoptotic cells is impaired
• splenomegaly develops with age
• by 40 weeks spleen weight is 3X control
• 2-3 times more lymphocytes in spleen but normal B cell to T cell ratio
• enlarged follicular zones
• enlarged white pulp

endocrine/exocrine glands
• reduced weights of later litters and death of 20-30% of pups

integument
• reduced weights of later litters and death of 20-30% of pups

cellular
• ability of macrophage to engulf apoptotic cells is impaired

growth/size/body
• splenomegaly develops with age
• by 40 weeks spleen weight is 3X control
• 2-3 times more lymphocytes in spleen but normal B cell to T cell ratio


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
01/20/2026
MGI 6.24
The Jackson Laboratory