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Phenotypes Associated with This Genotype
Genotype
MGI:3706335
Allelic
Composition
Itgb1tm1Mll/Itgb1tm1Mll
Tg(Wap-cre)1Gsc/0
Genetic
Background
involves: 129X1/SvJ * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Itgb1tm1Mll mutation (1 available); any Itgb1 mutation (58 available)
Tg(Wap-cre)1Gsc mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
• at lactation day 5, mammary glands have defects in alveolar integrity, with detachment of luminal epithelial cells resulting in an 11-fold increase in luminally shed and bulging cells due to alterations in cell-basement membrane associations
• the defect in alveolar integrity becomes more pronounced during a second lactation
• density of the lobular-alveolar structures is decreased at day 5 of the first, and more strongly, the second lactation
• luminal cell proliferation is reduced in mammary glands at day 5 of lactation

integument
• at lactation day 5, mammary glands have defects in alveolar integrity, with detachment of luminal epithelial cells resulting in an 11-fold increase in luminally shed and bulging cells due to alterations in cell-basement membrane associations
• the defect in alveolar integrity becomes more pronounced during a second lactation
• density of the lobular-alveolar structures is decreased at day 5 of the first, and more strongly, the second lactation
• luminal cell proliferation is reduced in mammary glands at day 5 of lactation


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
03/25/2025
MGI 6.24
The Jackson Laboratory