Imsiecke G, Müller W E
Institut für Physiologische Chemie, Universität, Mainz, Germany.
Cell Mol Biol (Noisy-le-grand). 1995 Sep;41(6):827-32.
Crystal structures have been identified in nuclei of cells from the freshwater sponges Ephydatia muelleri and Spongilla lacustris. Their length is approximately 5 microns and their diameter varies from 0.8 to 1 micron. They occur in several different cell types, among them pinacocytes, cystencytes (E. muelleri) and granulocytes as well as differentiating archaeocytes (S. lacustris). In contrast to earlier reports it is now shown that the crystals are geometrically periodic and anisotropic structures composed of silica. We assume that the crystals play a functional role during differentiation of the cells.
在淡水海绵穆勒艾氏拟球海绵（Ephydatia muelleri）和湖海绵（Spongilla lacustris）的细胞核中已鉴定出晶体结构。它们的长度约为5微米，直径在0.8至1微米之间变化。它们存在于几种不同的细胞类型中，包括扁平细胞、囊细胞（穆勒艾氏拟球海绵）和粒细胞以及正在分化的原始细胞（湖海绵）。与早期报告相反，现在表明这些晶体是由二氧化硅组成的几何周期性和各向异性结构。我们假设这些晶体在细胞分化过程中发挥功能作用。
