Newly discovered linkages between the cortical (pellicular) ridges of Opalina

DM Woolley

    Research output: Contribution to journalArticle (Academic Journal)peer-review

    1 Citation (Scopus)


    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 μm long, occur as a single row, 0.1 μm below the free edge, with an impressively regular spacing of 0.1 μm. 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 contributionNewly discovered linkages between the cortical (pellicular) ridges of Opalina
    Original languageEnglish
    Pages (from-to)309 - 311
    Number of pages3
    JournalEuropean Journal of Protistology
    Volume42 (4)
    Publication statusPublished - Nov 2006

    Bibliographical note

    Publisher: Elsevier


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