Results 31 to 40 of about 10,579 (209)

Cervical chondrocutaneous branchial remnant: A rare second branchial arch anomaly

open access: yesJournal of Pediatric Surgery Case Reports, 2021
Cervical chondrocutaneous branchial remnants are rare second branchial arch remnants which present in children as small, slow-growing nodules in the lower third of the neck anterior to the sternocleidomastoid muscle. They are most commonly unilateral and do not penetrate deeper than the SCM fascia.
T.A. Holtestaul   +2 more
openaire   +2 more sources

Third branchial cleft cyst with pyriform sinus fistula; case report

open access: yesOtolaryngology Case Reports
Branchial cleft anomalies are rare congenital malformations resulting from incomplete development of the branchial arches during embryogenesis. These anomalies, including branchial cysts, sinuses, and fistulas, are classified based on their embryological
Abdullah Almutairi   +3 more
doaj   +1 more source

Congenital midline cervical cleft

open access: yesJournal of Pediatric Surgery Case Reports, 2018
Congenital midline cervical cleft (CMCC) is a very rare congenital malformation of the neck. Although its embryologic origin is uncertain, the most widely accepted embryologic defect is impaired midline fusion of the distal branchial arches. We present a
Ahmed Abdelghaffar Helal   +1 more
doaj   +1 more source

Ancient Pbx-Hox signatures define hundreds of vertebrate developmental enhancers [PDF]

open access: yes, 2011
Background: Gene regulation through cis-regulatory elements plays a crucial role in development and disease. A major aim of the post-genomic era is to be able to read the function of cis-regulatory elements through scrutiny of their DNA sequence ...
Bronner, Marianne E.   +4 more
core   +5 more sources

Goldenhar Syndrome - A Case Report with Review of Literature

open access: yesCurrent Research in Dental Sciences
Goldenhar Syndrome (GS) is a rare congenital disorder arising from the defects in first and second branchial arches. It is characterized by a wide spectrum of symptoms that vary in severity and include facial abnormalities, microtia or anotia, vertebral ...
Pavani Muddepalli   +2 more
doaj   +1 more source

Non-syndromic Bilateral Branchial Cyst: A Case Report

open access: yesOman Medical Journal, 2023
Branchial cleft cysts generally occur unilaterally at the lateral aspect of the neck. Bilateral branchial cysts are rare and may have familial associations.
Nor Azirah Salahuddin   +6 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  

A shared role for sonic hedgehog signalling in patterning chondrichthyan gill arch appendages and tetrapod limbs. [PDF]

open access: yes, 2016
Chondrichthyans (sharks, skates, rays and holocephalans) possess paired appendages that project laterally from their gill arches, known as branchial rays.
Gillis, J Andrew, Hall, Brian K
core   +2 more sources

Osteology and relationships of Rhinopycnodus gabriellae gen. et sp. nov. (Pycnodontiformes) from the marine Late Cretaceous of Lebanon [PDF]

open access: yes, 2013
The osteology of Rhinopycnodus gabriellae gen. and sp. nov., a pycnodontiform fish from the marine Cenomanian (Late Cretaceous) of Lebanon, is studied in detail.
Capasso, Luigi, Taverne, Louis
core   +4 more sources

Analysis of cranial neural crest migratory pathways in axolotl using cell markers and transplantation [PDF]

open access: yes, 2000
We have examined the ability of normal and heterotopically transplanted neural crest cells to migrate along cranial neural crest pathways in the axolotl using focal DiI injections and in situ hybridization with the neural crest marker, AP-2. DiI labeling
Bronner-Fraser, Marianne   +4 more
core  

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