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Phenotypes Associated with This Genotype
Genotype
MGI:3609212
Allelic
Composition
Spi1tm1Sing/Spi1+
Spibtm1Mcs/Spib+
Genetic
Background
involves: 129S/SvEv * 129X1/SvJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Spi1tm1Sing mutation (0 available); any Spi1 mutation (27 available)
Spibtm1Mcs mutation (0 available); any Spib mutation (23 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• IgM cross-linking or pervanadate/H202 stimulation yields less than normal levels of tyrosine phosphorylation and IgM cross-linking also yields less calcium mobilization than normal
• although the B cell profiles in spleen and lymph node are normal, there are small splenic germinal centers, and inability to maintain germinal centers

immune system
• IgM cross-linking or pervanadate/H202 stimulation yields less than normal levels of tyrosine phosphorylation and IgM cross-linking also yields less calcium mobilization than normal
• although the B cell profiles in spleen and lymph node are normal, there are small splenic germinal centers, and inability to maintain germinal centers

cellular
• IgM cross-linking or pervanadate/H202 stimulation yields less than normal levels of tyrosine phosphorylation and IgM cross-linking also yields less calcium mobilization than normal


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
03/18/2025
MGI 6.24
The Jackson Laboratory