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Phenotypes Associated with This Genotype
Genotype
MGI:6887995
Allelic
Composition
Droshatm1Litt/Droshatm1Litt
Tg(Six2-EGFP/cre)1Amc/0
Genetic
Background
involves: 129P2/OlaHsd * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Droshatm1Litt mutation (2 available); any Drosha mutation (97 available)
Tg(Six2-EGFP/cre)1Amc mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
• increased apoptosis of cortical and central mesenchymal and epithelial cells
• normal apoptosis of stromal cells
• increase in stromal tissue in newborns
• cystic dilation of renal tubules in newborns
• no mature glomeruli in E18.5 embryos and in newborns
• reduced number of glomeruli in E16.5 embryos
• reduced number of S-shaped bodies in E13.5 embryos with further reduction at E16.5
• immature comma- and S-shaped bodies in E16.5 embryos
• no mature glomeruli in E18.5 embryos and in newborns
• thin and discontinuous cortical nephrogenic zone
• smaller kidneys with reduced tubular structures in newborns
• cystic dilation in newborns
• at least one absent kidney in 36% of E16.5 embryos, both absent in 6.5%

mortality/aging
• early perinatal mortality: no offspring beyond weaning stage

cellular
• increased apoptosis of cortical and central mesenchymal and epithelial cells
• normal apoptosis of stromal cells

behavior/neurological
• smaller milk spot in newborns

cardiovascular system
• causing death within hours of birth

homeostasis/metabolism
• in newborns
• causing death within hours of birth

growth/size/body
• cystic dilation of renal tubules in newborns

respiratory system
• causing death within hours of birth
• gasping in newborns


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