Susumu Ito (2011) CIL:10932, Felis catus, epithelial cell, enterocyte. CIL. Dataset

This electron micrograph highlights a darkly-stained glycocalyx rim of the brush border of the intestinal epithelium of the cat, stained en bloc with colloidal thorium. The glycocalyx is composed of negatively charged acidic polysaccharides, which bind the thorium. The enhanced staining of the polysaccharides shows that the glycocalyx is not just superficial to the microvilli, but rather, extends into the clefts between them. Figure 19, courtesy of Susumu Ito, from Chapter 1 (The Cell Surface) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. A PDF copy of the accompanying chapter is available on the ASCB's BioEDUCATE website.

本电子显微镜图像凸显了猫肠上皮刷状缘的深染糖萼边缘，经聚集体钍染料整体染色。糖萼由带负电荷的酸性多糖组成，能够与钍结合。多糖增强染色揭示了糖萼不仅限于微绒毛表面，而是深入至其间的裂隙之中。图19，由Ito Susumu提供，摘自Don W. Fawcett M.D.所著《细胞》第二版第一章（细胞表面）部分。该章节的PDF副本可在ASCB的BioEDUCATE网站上获取。