…The structure of the shell varies by species, but in the case of the pearl oyster, for example, it consists of three layers: the periosteum, the prismatic layer, and the nacreous layer. The outermost periosteum is a thin film mainly composed of conchiolin (a hard protein). The prismatic layer is a layer of calcium carbonate crystals that form a hexagonal columnar structure, and contains about 11% conchiolin. … *Some of the terminology explanations that mention "conchiolin" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…貝殻の構造形態は種によって異なるが,アコヤガイを例にとれば,殻皮層,稜柱層,真珠層の3層から成る。最外層の殻皮はコンキオリンconchiolin(硬タンパク質)を主とする薄膜である。稜柱層は炭酸カルシウムの結晶が集まり六角形の柱状構造をなす層で,コンキオリンを約11%含む。… ※「conchiolin」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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