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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Itga2b+
wild type
MGI:2431253
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Itga2btm1Graf/Itga2b+ B6.Cg-Itga2btm1Graf MGI:3717891
ht2
Itga2btm1Tlr/Itga2b+ either: (involves: 129S1/Sv * 129X1/SvJ * BALB/c) or (involves: 129S1/Sv * 129X1/SvJ * C57BL/6) MGI:4443070


Genotype
MGI:3717891
ht1
Allelic
Composition
Itga2btm1Graf/Itga2b+
Genetic
Background
B6.Cg-Itga2btm1Graf
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Itga2btm1Graf mutation (0 available); any Itga2b mutation (45 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• following whole body irradiation, the numbe rof YFP+ platelets decreases by 2-fold after day 6 of exposure
• YFP+ platelets are more responsive to thrombin stimulation than YFP- platelets within the same mouse

homeostasis/metabolism
• YFP+ platelets are more responsive to thrombin stimulation than YFP- platelets within the same mouse




Genotype
MGI:4443070
ht2
Allelic
Composition
Itga2btm1Tlr/Itga2b+
Genetic
Background
either: (involves: 129S1/Sv * 129X1/SvJ * BALB/c) or (involves: 129S1/Sv * 129X1/SvJ * C57BL/6)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Itga2btm1Tlr mutation (0 available); any Itga2b mutation (45 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
homeostasis/metabolism
• unlike platelet-rich plasma (PRP) from wild-type controls which complete the retraction of opaque thrombin-induced clots within a 2-hr period, heterozygous PRP shows both a delayed and incomplete clot retraction during this period
• heterozygous platelets display a specific fibrinogen binding capacity of 57% relative to 100% in wild-type platelets
• although heterozygous platelets exhibit substantial aggregation in response to ADP or collagen, the collagen response is significantly delayed relative to that in wild-type controls

hematopoietic system
• unlike platelet-rich plasma (PRP) from wild-type controls which complete the retraction of opaque thrombin-induced clots within a 2-hr period, heterozygous PRP shows both a delayed and incomplete clot retraction during this period
• heterozygous platelets display a specific fibrinogen binding capacity of 57% relative to 100% in wild-type platelets
• although heterozygous platelets exhibit substantial aggregation in response to ADP or collagen, the collagen response is significantly delayed relative to that in wild-type controls





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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
01/13/2026
MGI 6.24
The Jackson Laboratory