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(english) Translucent tissue that composes most of the skeleton of embryonic and very young fishes; in some fishes (notably the sharks and rays), it persists in adults, but in most higher (bony) fishes it largely is converted into bone with growth; a skeletal material consisting of a matrix of soft, white or translucent chondrin, also: the flexible, semi-rigid connective tissue consisting of rounded cells (chondrocytes) in a matrix with collagen fibres and low in clacium and phospate salts. Serves to support the body. It is not as strong as bone but is lighter and more flexible. Cyclostomata and Chondrichthyes have an entirely cartilaginous skeleton while other fishes have both cartilaginous and bony elements in the skeleton. Also calles gristle, especially when ingested by humans. (See also: cartilaginous fishes, bony fishes, finfish)
(french) Tissu translucide qui compose la plupart du squelette des poissons embryonnaires et très jeunes; chez quelques poissons (particulièrement les requins et raies), il persiste chez les adultes, mais chez la plupart des poissons (osseux) de haut niveux, il est largement converti en os par le procèss de croissance; une matière squelettique qui consiste en une matrice de chondrine douce, blanche ou translucide. (See also: cartilaginous fishes, bony fishes, finfish)
(portuguese) Tecido translúcido constituinte do esqueleto das larvas e juvenis dos peixes. No caso dos tubarões e raias este tipo de tecido persiste até Àidade adulta. Nos peixes ósseos é convertido em osso com a idade; tecido constituído por uma matriz de condrina. (See also: cartilaginous fishes, bony fishes, finfish)

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