Asteroid bodies--an ultrastructural study.
Asteroid bodies--an ultrastructural study.
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小行星体——超微结构研究。
DOI：
--
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发表时间：
1983
影响因子：
4.4
通讯作者：
I. Nir
中科院分区：
文献类型：
--
作者：
H. Miller;B. Miller;H. Rabinowitz;S. Zonis;I. Nir
本文报告一位因小行星玻璃体变性而导致视力丧失的病人，其玻璃体吸出物中的小行星体的超微结构研究。在适当的条件下固定和高分辨率透射电子显微镜，观察到的周期为4.6 nm的层状排列。这种层状排列是水中脂质液晶相的典型特征。X射线显微分析证实了小行星体内存在钙和磷。我们认为，小行星体不是真正的晶体，而是玻璃体液中磷脂的液晶。
An ultrastructural study of asteroid bodies in a vitreous aspirate from a patient suffering visual loss as a result of asteroid hyalosis is presented. Under appropriate conditions of fixation and high resolution transmission electron microscopy, a lamellar arrangement with a periodicity of 4.6 nm was observed. This lamellar arrangement is typical of liquid crystalline phases of lipids in water. X-ray micro-analysis confirmed the presence of calcium and phosphorus in the asteroid bodies. We propose that the asteroid bodies are not true crystals but rather liquid crystals of phospholipids in the vitreous humor.