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Phenotypes Associated with This Genotype
Genotype
MGI:7437667
Allelic
Composition
Sp8tm1Smb/Sp8tm2Smb
Mesp1tm2(cre)Ysa/Mesp1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6NCrlj * CBA/JNCrlj
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mesp1tm2(cre)Ysa mutation (3 available); any Mesp1 mutation (19 available)
Sp8tm1Smb mutation (0 available); any Sp8 mutation (30 available)
Sp8tm2Smb mutation (1 available); any Sp8 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
N
• 9 of 10 mice exhibited no detectable craniofacial defects
• 1 of 10 mice showed truncation of anterior facial structures
• 1 of 10 mice showed incomplete medial nasal prominence approximation along the facial midline, resulting in a partial facial midline cleft

growth/size/body
• 1 of 10 mice showed truncation of anterior facial structures
• 1 of 10 mice showed incomplete medial nasal prominence approximation along the facial midline, resulting in a partial facial midline cleft


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
01/20/2026
MGI 6.24
The Jackson Laboratory