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Gene Expression Data
Assay Details
Assay
Reference: J:19631 McKay IJ, et al., The kreisler mouse: a hindbrain segmentation mutant that lacks two rhombomeres. Development. 1994 Aug;120(8):2199-211
Assay type: RNA in situ
MGI Accession ID: MGI:1932338
Gene symbol: Egr2
Gene name: early growth response 2
Probe: Krox20 probe14
Probe preparation: Antisense labelled with S35 RNA
Visualized with: Autoradiography
Assay notes: Kreisler -/- mutants at dpc 9.5 have an absence of morphological segmentation posterior to the boundary between r3 and r4.
Results
Specimen 2A: embryonic day 9.5 (more )
Note: Approximately 22 somites.
Structure Level Pattern Image Note
TS15: rhombomere 5 Strong 2A Strong expression in r5 adjacent to the otocyst.
TS15: rhombomere 3 Present 2A Expression in r3 is beginning to fade.

Specimen 2B: embryonic day 9.5; Mafbkr/Mafbkr (more )
Note: Approximately 22 somites.
Structure Level Pattern Image Note
TS15: rhombomere 5 Absent 2B

Specimen 2C: embryonic day 9.5; Mafbkr/Mafbkr (more )
Note: Approximately 22 somites. More dorsal section of the same embryo as in B.
Structure Level Pattern Image Note
TS15: rhombomere 3 Present 2C This domain of expression persists in kreisler embryos (up to 25 somites) when wild-type embryos have ceased to show expression in r3. This is a more dorsal section of same embryo as in B.

Specimen Table 1/not shown: embryonic day 9.0 (more )
Note: 17 and 19 somites.
Structure Level Pattern Image Note
TS14: rhombomere 3 Present
TS14: rhombomere 5 Present

Specimen Table 1/not shown: embryonic day 9.5 (more )
Note: 21, 22, 24 and 25 somites.
Structure Level Pattern Image Note
TS15: rhombomere 3 Absent A trace in 21-somite embryo but absent in 22-, 24,- and 25-somite embryos.
TS15: rhombomere 5 Present

Specimen Table 1/not shown: embryonic day 9.0; Mafbkr/Mafbkr (more )
Note: 18 and 19 somites.
Structure Level Pattern Image Note
TS14: rhombomere 3 Present
TS14: rhombomere 5 Absent

Specimen Table 1/not shown: embryonic day 9.5; Mafbkr/Mafbkr (more )
Note: 22-25 somites.
Structure Level Pattern Image Note
TS15: rhombomere 3 Present
TS15: rhombomere 5 Absent

Specimen not shown: embryonic day 8.0 (more )
Note: 3-5 somites.
Structure Level Pattern Image Note
TS12: future hindbrain Present Regionally restricted A single domain of expression corresponding to future r3 in 3-5 somite embryos.

Specimen not shown: embryonic day 8.0; Mafbkr/Mafbkr (more )
Note: 3-5 somites.
Structure Level Pattern Image Note
TS12: future hindbrain Present Regionally restricted A single domain of expression corresponding to future r3 in 3-5 somite embryos.

Specimen 5A: embryonic day 8.0; Mafbkr/Mafb+ (more )
Note: 7 somites.
Structure Level Pattern Image Note
TS12: future hindbrain Present Regionally restricted 5A Expression in a pattern corresponding to r3 and r5.

Specimen 5B: embryonic day 8.0; Mafbkr/Mafbkr (more )
Note: 7 somites.
Structure Level Pattern Image Note
TS12: future hindbrain Present Regionally restricted 5B Expression in a domain corresponding to r3 and absence of expression in an area corresponding to r5.


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
05/07/2024
MGI 6.23
The Jackson Laboratory