Samples of Opalina ranarum have been prepared for electron microscopy by ultra-rapid cryofixation followed by substitution fixation in a solvent containing tannic acid. This technique has made it possible to see that very thin linkages exist between the pleated ridges that form the surface of the cell. Between any two adjacent cortical ridges, the linkages, which are approximately 0.1 Î¼m long, occur as a single row, 0.1 Î¼m below the free edge, with an impressively regular spacing of 0.1 Î¼m. The cortical ridges of the Opalinids are spaced with remarkable uniformity, even when thrown into undulating patterns. The linkages described here will inevitably stabilize the complex architecture of the cortex. Other possible functions are discussed.
|Translated title of the contribution||Newly discovered linkages between the cortical (pellicular) ridges of Opalina|
|Pages (from-to)||309 - 311|
|Number of pages||3|
|Journal||European Journal of Protistology|
|Publication status||Published - Nov 2006|