embryo |
|
detected |
| | Ubiquitously expressed. |
1st branchial arch maxillary component mesenchyme |
|
strong |
| regional | Transcripts are detected in the anterior part (including the maxillary component) of arch 1. Sections of gelatin embedded whole mount embryos reveal Hira transcripts in the mesenchyme of the pharyngeal arches (not shown). |
2nd branchial arch mesenchyme |
|
strong |
| regional | Expressed in the posterior region. Sections of gelatin embedded whole mount embryos reveal Hira transcripts in the mesenchyme of the pharyngeal arches (not shown). |
fronto-nasal process |
|
strong |
| | |
limb |
|
strong |
| | |
head mesenchyme derived from neural crest |
|
detected |
| | Just posterior to arches 1 and 2 a circumscribed spot with a high level of Hira transcripts is present. This region corresponds well to the region where hindbrain neural crest cells reside before entering the developing gut and the third and fourth pharyngeal arch. In chicken embryos this region is known as the circumpharyngeal neural crest. |