Results 21 to 30 of about 23,002 (198)

Five new species of Terebellides (Annelida, Polychaeta, Trichobranchidae) from Papua New Guinea (Bismarck and Solomon seas)

open access: yesFrontiers in Ecology and Evolution
Five new species of Terebellides are described from coastal and deep waters of Papua New Guinea, using both morphology and molecular tools (for four species). Terebellides elenae n. sp.
Nicolas Lavesque   +4 more
doaj   +1 more source

Parallel developmental genetic features underlie stickleback gill raker evolution. [PDF]

open access: yes, 2014
BackgroundConvergent evolution, the repeated evolution of similar phenotypes in independent lineages, provides natural replicates to study mechanisms of evolution.
Cleves, Phillip A   +4 more
core   +2 more sources

A Novel Technique of Branchial Fistula Tract Delineation and Excision In Children Allergic To Dyes

open access: yesBengal Journal of Otolaryngology and Head Neck Surgery, 2015
Introduction Branchial arch fistula which results from a second arch anomaly is rarely seen in practice. The patients usually seek medical advice for persistent discharge from an opening in the neck or mucopurulent discharge from the opening of an ...
Swagatam Banerjee   +4 more
doaj   +3 more sources

Dermoid cyst in the floor of the mouth extending to the submental region: A case report and a review

open access: yesDentistry and Medical Research, 2022
Dermoid cysts in the floor of the mouth or submental region are developmental cysts that occur due to the entrapment of the ectoderm between the second and third branchial arch during embryogenesis around 3rd–5th week of intrauterine life.
Mujtaba Bala   +4 more
doaj   +1 more source

Caldesmon regulates actin dynamics to influence cranial neural crest migration in Xenopus [PDF]

open access: yes, 2011
Caldesmon (CaD) is an important actin modulator that associates with actin filaments to regulate cell morphology and motility. Although extensively studied in cultured cells, there is little functional information regarding the role of CaD in migrating ...
Bronner-Fraser, Marianne   +2 more
core   +2 more sources

Do you know this syndrome? Você conhece esta síndrome?

open access: yesAnais Brasileiros de Dermatologia, 2012
Goldenhar syndrome is a sporadic or inherited genetic syndrome characterized by limbal dermoids, preauricular skin tags and mandibular hypoplasia. Vertebral abnormalities may occur.
Luiz Maurício Costa Almeida   +2 more
doaj   +1 more source

A case of cystic schwannoma in the neck masquerading as branchial cleft cyst

open access: yesRare Tumors, 2014
One-third of schwannomas occur in head and neck region, mostly in the parapharyngeal region. Cystic change is seen in only 4% of schwannomas. The diagnosis of such tumors remains a challenge due to the rarity of these lesions and limited utility of fine ...
Sangita Bohara   +5 more
doaj   +1 more source

Retinoic acid signaling organizes endodermal organ specification along the entire antero-posterior axis. [PDF]

open access: yesPLoS ONE, 2009
BACKGROUND: Endoderm organ primordia become specified between gastrulation and gut tube folding in Amniotes. Although the requirement for RA signaling for the development of a few individual endoderm organs has been established a systematic assessment of
Elke Bayha   +3 more
doaj   +1 more source

Fate mapping identifies the origin of SHF/AHF progenitors in the chick primitive streak [PDF]

open access: yes, 2012
Heart development depends on the spatio-temporally regulated contribution of progenitor cells from the primary, secondary and anterior heart fields. Primary heart field (PHF) cells are first recruited to form a linear heart tube; later, they contribute ...
Camp, E.   +2 more
core   +3 more sources

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