Kaufmann R
Scan Electron Microsc. 1980(Pt 2):641-6.
In shock frozen and freeze dried specimens of cat and frog retina distribution patterns of physiological cations were obtained by means of laser microprobe mass analysis with special emphasis to Ca and Ba in structural elements such as photoreceptors and melanin granules. Ca was found to be distributed along single cones of frog in a characteristic bimodal fashion whereas Na and K showed a rather homogeneous concentration profil. The presence of large amounts of Ba in pigment granula was reconfirmed in retina pigment epithelium and, newly, in melanoma cells. Additional microchemical characterization concerned organic constituents of various tissue layers of the retina.
在猫和青蛙视网膜的速冻和冻干标本中，通过激光微探针质谱分析获得了生理阳离子的分布模式，特别关注了光感受器和黑色素颗粒等结构元素中的钙和钡。发现钙以一种典型的双峰方式沿着青蛙的单锥体分布，而钠和钾的浓度分布相当均匀。色素颗粒中大量钡的存在在视网膜色素上皮中再次得到证实，并且新发现黑色素瘤细胞中也有。额外的微化学表征涉及视网膜各组织层的有机成分。
