conchiolin

conchiolin
[ˈkɒntʃɪə(ʊ)lɪn]
noun
  1. [mass noun](Zoology)a tough, insoluble protein secreted by molluscs, forming the organic matrix of the shell within which calcium carbonate is deposited
    (动)贝壳素,贝壳硬蛋白,壳基质
语源
  1. late 19th cent.: from Latin concha 'shell' + the diminutive suffix -iola + -in
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