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Phenotypes Associated with This Genotype
Genotype
MGI:3698843
Allelic
Composition		 Rag1tm1Mom/Rag1tm1Mom
Tnfrsf25tm1Mjo/Tnfrsf25tm1Mjo
Genetic
Background		 involves: 129P2/OlaHsd * 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rag1tm1Mom mutation (56 available); any Rag1 mutation (133 available)
Tnfrsf25tm1Mjo mutation (0 available); any Tnfrsf25 mutation (23 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
hematopoietic system
abnormal T cell differentiation ( J:84536 )
• thymocyte development is arrested at the CD25+CD44- double negative (DN) stage

immune system
abnormal T cell differentiation ( J:84536 )
• thymocyte development is arrested at the CD25+CD44- double negative (DN) stage

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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Funding Information
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Send questions and comments to User Support. 		last database update
01/20/2026
MGI 6.24 		The Jackson Laboratory