About   Help   FAQ
Phenotypes Associated with This Genotype
Genotype
MGI:7281482
Allelic
Composition
Cd19tm1(cre)Cgn/Cd19+
Myd88em1.1Rsky/Myd88+
Genetic
Background
involves: C57BL/6NTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cd19tm1(cre)Cgn mutation (12 available); any Cd19 mutation (57 available)
Myd88em1.1Rsky mutation (0 available); any Myd88 mutation (51 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
N
• normal B cell development in bone marrow
• normal Ig class switching in B cells in spleen, mesenteric lymph nodes and Peyers patches
• from age 30 weeks
• increased frequency and number from age 30 weeks, increasing over time
• increased number of IgM+ plasma cells
• increased plasma cell compartment in spleen and bone marrow
• increased frequency and number of TACI+ CD138+ plasma cells from age 50 weeks
• increased frequency and number of germinal center B cells from age 30 weeks, increasing over time
• normal frequency of follicular and marginal zone B cells
• increased serum levels from age 10 weeks, increasing over time

immune system
• from age 30 weeks
• increased frequency and number from age 30 weeks, increasing over time
• increased number of IgM+ plasma cells
• increased plasma cell compartment in spleen and bone marrow
• increased frequency and number of TACI+ CD138+ plasma cells from age 50 weeks
• increased frequency and number of germinal center B cells from age 30 weeks, increasing over time
• normal frequency of follicular and marginal zone B cells
• increased serum levels from age 10 weeks, increasing over time

growth/size/body
• from age 30 weeks


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)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
01/06/2026
MGI 6.24
The Jackson Laboratory