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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
B2m+
wild type
MGI:2435732
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
B2mtm1b(EUCOMM)Wtsi/B2m+ C57BL/6N-B2mtm1b(EUCOMM)Wtsi/Tcp MGI:6288352
ht2
B2mtm1Unc/B2m+ involves: 129P2/OlaHsd * C57BL/6 MGI:3762580


Genotype
MGI:6288352
ht1
Allelic
Composition
B2mtm1b(EUCOMM)Wtsi/B2m+
Genetic
Background
C57BL/6N-B2mtm1b(EUCOMM)Wtsi/Tcp
Cell Lines EPD0620_2_B08
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
B2mtm1b(EUCOMM)Wtsi mutation (2 available); any B2m mutation (117 available)
Data Sources
phenotype observed in females
phenotype observed in males
N normal phenotype
homeostasis/metabolism

integument

nervous system

reproductive system
IMPC - UCD




Genotype
MGI:3762580
ht2
Allelic
Composition
B2mtm1Unc/B2m+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
B2mtm1Unc mutation (36 available); any B2m mutation (117 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• numbers of CD8+CD4- T cells from the thymus of five week old mice are reduced in comparison to control (4.9% vs. 6.7%), however, in peripheral lymphoid tissues numbers of CD8+CD4- T cells do not differ from control
• surface expression of class I molecules in cells from lymph nodes are reduced in comparison to control

hematopoietic system
• numbers of CD8+CD4- T cells from the thymus of five week old mice are reduced in comparison to control (4.9% vs. 6.7%), however, in peripheral lymphoid tissues numbers of CD8+CD4- T cells do not differ from control





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last database update
03/24/2026
MGI 6.24
The Jackson Laboratory