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Facial Cartilage Development in Jawed Fish
Sil Jin1, Yucheol Choe2, Chong Pyo Choe1,3
1Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 52828, Korea.
Abstract:
In jawed fish, the jaw and branchial basket are essential organs for respiration and feeding. During embryogenesis, facial cartilages that form the framework of the jaw and branchial basket are developed from the cranial neural crest-derived ectomesenchyme of the pharyngeal arches. Developmental genetic studies in zebrafish and skates reveal that, in the jaw, the developmental processes for facial cartilage formation are largely conserved. While those for the development of cartilaginous elements of the branchial basket are less understood, recent studies in zebrafish suggest a unique developmental genetic basis for dorsal cartilaginous elements of the branchial basket. In this mini-review, we sketch the developmental genetic processes for facial cartilage formation in the jawed fish, together with recent discoveries on the dorsal cartilage development in the zebrafish branchial basket.
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