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trab A trab is structural element within a sponge formed by the fusion of dendroclones. In the Anthaspidellidae, when spicules (usually dendroclones) connect at their tips to form a ladder-like structure, trabs may be formed. Oxeas are sometimes employed in the central rod.〔〔 Trabs have a feather-like structure, or may form rods.〔 Trabs are usually regularly spaced, usually at sub-millimetric intervals.〔 Further dendroclones may interconnect adjacent trabs, forming ladder-like structures. The presence and alignment of trabs is often related to the internal structure of canals within sponges. == References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「trab」の詳細全文を読む
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