Results 31 to 40 of about 23,002 (198)

Apoptosis of Premigratory Neural Crest Cells in Rhombomeres 3 and 5: Consequences for Patterning of the Branchial Region

open access: yesDevelopmental Biology, 2002
In the avian hindbrain, premigratory neural crest cells undergo programmed cell death (apoptosis) in rhombomeres 3 and 5 (r3, r5). Here, we have attempted to analyze the significance of the loss of neural crest cells from these odd-numbered rhombomeres. When apoptosis is prevented in r3 and r5, r3 crest migrate into the first arch and r5 into the third
Ellies, D L, Tucker, A S, Lumsden, A
openaire   +3 more sources

A Second Branchial Cleft Cyst Presenting as a Dumbbell -Shaped Anterior Neck Mass

open access: yesPhilippine Journal of Otolaryngology Head and Neck Surgery, 2018
Branchial cleft anomalies are among the most common causes of congenital anterior neck masses in the pediatric population. They present as epithelial-lined, single cysts.1,2 The definitive management is surgical excision.3 However, failure to remove the ...
Ann Bernadette G. Sunga   +1 more
doaj   +1 more source

Rhombomere rotation reveals that multiple mechanisms contribute to the segmental pattern of hindbrain neural crest migration [PDF]

open access: yes, 1994
Hindbrain neural crest cells adjacent to rhombomeres 2 (r2), r4 and r6 migrate in a segmental pattern, toward the first, second and third branchial arches, respectively.
Bronner-Fraser, Marianne   +2 more
core  

Significance of the auditory meatus inferior wall cartilage in the surgical treatment of congenital first branchial cleft anomalies in children

open access: yesWorld Journal of Pediatric Surgery, 2023
Objective To investigate the clinical significance of the inferior wall cartilage of the auditory meatus in surgical treatment of congenital first branchial cleft anomalies (CFBCAs) in children.Methods Twenty children diagnosed with CFBCAs who underwent ...
Bo Yu   +5 more
doaj   +1 more source

In ovo time-lapse analysis after dorsal neural tube ablation shows rerouting of chick hindbrain neural crest [PDF]

open access: yes, 2000
Previous analyses of single neural crest cell trajectories have suggested important roles for interactions between neural crest cells and the environment, and amongst neural crest cells. To test the relative contribution of intrinsic versus extrinsic
Bronner-Fraser, Marianne   +2 more
core  

Molecular and cellular mechanisms underlying the evolution of form and function in the amniote jaw. [PDF]

open access: yes, 2019
The amniote jaw complex is a remarkable amalgamation of derivatives from distinct embryonic cell lineages. During development, the cells in these lineages experience concerted movements, migrations, and signaling interactions that take them from their ...
A Abzhanov   +395 more
core   +1 more source

Bilateral fourth branchial fissure: a case report and literature review [PDF]

open access: yes口腔疾病防治
Objective To explore the diagnosis and treatment of fourth branchial cleft deformity. Methods The clinical data of a patient with bilateral fourth branchial cleft deformity in the neck were summarized, and the literature was reviewed. Results The patient
TIAN He, LIU Yujiao, ZHANG Hao, YU Xuezhou
doaj   +1 more source

Rhombomere of origin determines autonomous versus environmentally regulated expression of Hoxa3 in the avian embryo [PDF]

open access: yes, 1996
We have investigated the pattern and regulation of Hoxa3 expression in the hindbrain and associated neural crest cells in the chick embryo, using whole mount in situ hybridization in conjunction with DiI labeling of neural crest cells and microsurgical ...
Ariza-McNaughton, Linda   +4 more
core  

Competence, specification and commitment to an olfactory placode fate [PDF]

open access: yes, 2008
The nasal placode shares a common origin with other sensory placodes within a pre-placodal domain at the cranial neural plate border. However, little is known about early events in nasal placode development as it segregates from prospective lens, neural ...
Bhattacharyya, Sujata   +1 more
core   +2 more sources

Intra-Operative Detection of a Left-Sided Non-Recurrent Laryngeal Nerve during Vagus Nerve Stimulator Implantation

open access: yesMedicina, 2020
Left sided non-recurrent laryngeal nerves (NRLN) are very rarely observed during surgery in the head and neck region. Arising directly from the cervical aspect of the vagus nerve, the NRLN lies in a vulnerable position distant from its normal location ...
Jason John Labuschagne, Niels Hammer
doaj   +1 more source

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