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  • 1
    ISSN: 1615-6102
    Keywords: Amphidinium ; Dinoflagellates ; Cytoskeleton ; Gymnodinium ; Immunofluorescence ; Microtubules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The sub-thecal microtubular cytoskeleton of the dinoflagellatesAmphidinium rhynchocephalum, Gymnodinium sanguineum, andGymnodinium. sp has been investigated by indirect immunofluorescence microscopy. In these cells, the majority of cytoskeletal microtubules lie in the anterior-posterior plane. These longitudinal microtubules clearly originate from one of two radially arranged microtubular bands that correspond in location with the anterior and posterior edge of the cingolar depression. Despite the morphological variability of these gymnodinioid dinoflagellates, our data indicate that the microtubular cytoskeleton perfectly reflects the spatial patterning of the epicone and hypocone in each cell.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1615-6102
    Keywords: Bodonid ; Crithidia ; Cytoskeleton ; Cytostome ; Diplonema ; Euglena ; Feeding apparatus ; Flagellar apparatus ; Microtubular root ; Mitosis ; Pellicle ; Rhynchomonas ; Trypanoplasma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The euglenoids and kinetoplastids form a diverse assemblage of organisms which show no obvious phylogenetic relationship with other flagellates. An ultrastructural examination and comparison of the flagellar apparatus, the feeding apparatus, and mitotic nucleus indicate a number of shared morphological features which support a common ancestry for the two groups. Of particular interest is the euglenoid,Petalomonas cantuscygni, which shares many of the ultrastructural features common to both groups. Based on the data presented, we hypothesize that a euglenoid with features similar to those now present inP. cantuscygni was ancestral to both the euglenoid and kinetoplastid lines.
    Type of Medium: Electronic Resource
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