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Gene Expression Data
Assay Details
Assay
Reference: J:41540 Rossel M, et al., Mice mutant for both Hoxa1 and Hoxb1 show extensive remodeling of the hindbrain and defects in craniofacial development. Development. 1999 Nov;126(22):5027-40
Assay type: Immunohistochemistry
MGI Accession ID: MGI:1346704
Gene symbol: Nefm
Gene name: neurofilament, medium polypeptide
Results
Specimen 6A: embryonic day 9.5; Hoxa1tm1Mrc/Hoxa1+, Hoxb1tm3Mrc/Hoxb1+ (more )
Structure Level Pattern Image Note
TS15: rhombomere 2 Present Single cells 6A The first branchiomotorneurons to differentiate (identified by neurofilament labeling) are seen in rhombomeres 2 and 4, where they send their fasciculated axons towards their respective exit points.
TS15: rhombomere 4 Present Single cells 6A The first branchiomotorneurons to differentiate (identified by neurofilament labeling) are seen in rhombomeres 2 and 4, where they send their fasciculated axons towards their respective exit points.
TS15: rhombomere 3 Trace Single cells 6A At this stage, almost no neurons and axons expressing the neurofilament protein are observed in r3 and r5.
TS15: rhombomere 5 Trace Single cells 6A At this stage, almost no neurons and axons expressing the neurofilament protein are observed in r3 and r5.

Specimen 6B: embryonic day 9.5; Hoxa1tm1Mrc/Hoxa1tm1Mrc, Hoxb1tm3Mrc/Hoxb1+ (more )
Note: These mutants have lost the characteristic hindbrain organization into distinct even- and odd-numbered rhombomeres.
Structure Level Pattern Image Note
TS15: future hindbrain Present Single cells 6B No region of low neuron content is observed in this mutant. Rhombomere 2 neurons are still recognizable in the mutant because of the convergence of axons towards an exit point. Branchiomotor neurons are present, sending out axons all along the neural tube

Specimen 6C: embryonic day 9.5; Hoxa1tm1Mrc/Hoxa1tm1Mrc, Hoxb1tm3Mrc/Hoxb1tm3Mrc (more )
Note: These mutants have lost the characteristic hindbrain organization into distinct even- and odd-numbered rhombomeres.
Structure Level Pattern Image Note
TS15: future hindbrain Present Single cells 6C No region of low neuron content is observed in this mutant. Rhombomere 2 neurons are still recognizable in the mutant because of the convergence of axons towards an exit point. Branchiomotor neurons are present, sending out axons all along the neural tube


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