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A targeting vector was constructed in which the exon encoding the secreted form of the immunoglobulin mu (IgM) heavy chain and its three downstream poly(A) sites were replaced by a cDNA fragment encoding the constant region mu4 exon and the exon encoding the membrane-bound form of IgM. The resultant homozygous mutant mice had B cells that did not secrete IgM, but did express membrane-bound IgM. (J:47425)
Basic Information
Allele
Strain of Origin
Allele Type
Mutation
Inheritance
Gene Expression
Related Disease
Reference
Phenotypes
Legend：
hm: homozygous
ht: heterozygous
cn: conditional genotype
cx: complex: > 1 genome feature
tg: involves transgenes
ot: other: hemizygous, indeterminate,...
(F): Female
(M): Male
phenotype observed
N: normal phenotype
(#): related diseases count
Phenotypes：
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| Phenotypes |
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References Literature
Title
PMID
Journal
Year
IF
