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Gene Expression Data
Assay Details
Assay
Reference: J:163793 McDonald LA, et al., Comparison of Iroquois gene expression in limbs/fins of vertebrate embryos. J Anat. 2010 Jun;216(6):683-91
Assay type: RNA in situ
MGI Accession ID: MGI:7709789
Gene symbol: Irx1
Gene name: Iroquois homeobox 1
Probe: IMAGE clone 2615958
Probe preparation: Antisense RNA
Results
Specimen 2/S2A fl: embryonic day 11.5 (more )
Structure Level Pattern Image Note
TS19: forelimb bud Present Regionally restricted 2A fl , S2A fl Expressed in the proximal regions.

Specimen 2/S2A hl: embryonic day 11.5 (more )
Structure Level Pattern Image Note
TS19: hindlimb bud Present Regionally restricted 2A hl , S2A hl Expressed in the proximal regions.

Specimen 2/S2B fl: embryonic day 12.5 (more )
Structure Level Pattern Image Note
TS20: forelimb digit Present 2B fl , S2B fl Expressed in condensing digits, with stronger expression in digits 2-4.
TS20: forelimb digit 2 Present S2B fl , 2B fl Expression was seen first and was strongest.
TS20: forelimb digit 3 Present S2B fl , 2B fl Expression was seen first and was strongest.
TS20: forelimb digit 4 Present S2B fl , 2B fl Expression was seen first and was strongest.
TS20: forelimb digit 1 Present S2B fl , 2B fl Weaker expression.
TS20: forelimb digit 5 Present S2B fl , 2B fl Weaker expression.

Specimen 2/S2B hl: embryonic day 12.5 (more )
Structure Level Pattern Image Note
TS20: hindlimb digit Present S2B hl , 2B hl Expressed in condensing digits, with stronger expression in digits 2-4.
TS20: hindlimb digit 2 Present S2B hl , 2B hl Stronger expression.
TS20: hindlimb digit 3 Present S2B hl , 2B hl Stronger expression.
TS20: hindlimb digit 4 Present S2B hl , 2B hl Stronger expression.
TS20: hindlimb digit 1 Present 2B hl , S2B hl Weaker expression.
TS20: hindlimb digit 5 Present 2B hl , S2B hl Weaker expression.

Specimen 2/S2C fl: embryonic day 13.5 (more )
Structure Level Pattern Image Note
TS21: hand joint Present Regionally restricted S2C fl , 2C fl Expression was stronger in the digits 2, 3 and 4.
TS21: forelimb digit 2 Present Regionally restricted S2C fl , 2C fl Expression was stronger in the joint-forming regions.
TS21: forelimb digit 3 Present Regionally restricted S2C fl , 2C fl Expression was stronger in the joint-forming regions.
TS21: forelimb digit 4 Present Regionally restricted S2C fl , 2C fl Expression was stronger in the joint-forming regions.

Specimen 2/S2C hl: embryonic day 13.5 (more )
Structure Level Pattern Image Note
TS21: foot joint Present Regionally restricted 2C hl , S2C hl Expression was stronger in the digits 2, 3 and 4.
TS21: hindlimb digit 2 Present Regionally restricted 2C hl , S2C hl Expression was stronger in the joint-forming regions.
TS21: hindlimb digit 3 Present Regionally restricted 2C hl , S2C hl Expression was stronger in the joint-forming regions.
TS21: hindlimb digit 4 Present Regionally restricted 2C hl , S2C hl Expression was stronger in the joint-forming regions.

Specimen 2/S2D fl: embryonic day 14.5 (more )
Structure Level Pattern Image Note
TS22: hand joint Present Regionally restricted S2D fl , 2D fl Expressed in joint-forming regions in all digits.

Specimen 2/S2D hl: embryonic day 14.5 (more )
Structure Level Pattern Image Note
TS22: foot joint Present Regionally restricted 2D hl , S2D hl Expressed in joint-forming regions in all digits.

Specimen 4C FL: embryonic day 12.5 (more )
Structure Level Pattern Image Note
TS20: forelimb digit Very strong Widespread 4C fl Expressed in all digit condensations.

Specimen 4C HL: embryonic day 12.5 (more )
Structure Level Pattern Image Note
TS20: hindlimb digit Very strong Widespread 4C hl Expressed in all digit condensations.

Specimen 4D FL: embryonic day 13.5 (more )
Structure Level Pattern Image Note
TS21: hand joint Present Regionally restricted 4D fl Expressed in joint-forming regions in all the digits.
TS21: forelimb digit 1 Present Regionally restricted 4D fl Expressed in joint-forming regions.
TS21: forelimb digit 2 Present Regionally restricted 4D fl Expressed in joint-forming regions.
TS21: forelimb digit 3 Present Regionally restricted 4D fl Expressed in joint-forming regions.
TS21: forelimb digit 4 Present Regionally restricted 4D fl Expressed in joint-forming regions.
TS21: forelimb digit 5 Present Regionally restricted 4D fl Expressed in joint-forming regions.

Specimen 4D HL: embryonic day 13.5 (more )
Structure Level Pattern Image Note
TS21: hindlimb digit 1 Strong 4D hl Expressed throughout the skeleton of the digit.
TS21: hindlimb digit 5 Strong 4D hl Expressed throughout the skeleton of the digit.
TS21: hindlimb digit 2 Present Regionally restricted 4D hl Expressed in joint-forming regions.
TS21: hindlimb digit 3 Present Regionally restricted 4D hl Expressed in joint-forming regions.
TS21: hindlimb digit 4 Present Regionally restricted 4D hl Expressed in joint-forming regions.
TS21: foot joint Present Regionally restricted 4D hl Expressed in joint-forming regions of digits 2, 3 and 4.


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
03/25/2025
MGI 6.24
The Jackson Laboratory