Nuclear and cytoplasmic microfilaments in the pineal chief cells of the rat

  • Antti U. Arstila
  • Väinö K. Hopsu-Havu
Article
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Summary

The presence of identical groups of parallel microfilaments in the nucleus and in the cytoplasm of the rat epiphyseal chief cells are described. The areas of microfilaments are not surrounded by any membranes and the single filaments are about 70–80 Å in diameter and vary largely in length. At higher magnification the filaments are shown to be composed of an inner light and outer dark zone. Since the filaments in the nucleus and in the cytoplasm are morphologically identical, they are suggested to originate in the same part of the cell and thus to be involved in the nucleo-cytoplasmic interaction.

Keywords

High Magnification Identical Group Single Filament Chief Cell Dark Zone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Die Anwesenheit von gleichartigen Gruppen paralleler Mikrofilamente in Kern und Zytoplasma von „Haupt-Zellen“ in der Rattenepiphyse wird beschrieben. Die Mikrofilamentareale werden nicht von Membranen umgeben; die einzelnen Filamente weisen einen Durchmesser von etwa 70–80 A auf und variieren stark in der Länge.

Bei starker Vergrößerung zeigt sich, daß die Filamente aus einem inneren hellen und äußeren dunklen Streifen zusammengesetzt sind.

Da die Filamente im Kern und im Zytoplasma morphologisch identisch sind, kann man fragen, ob sie am selben Ort in der Zelle entstehen und folglich in der Wechselwirkung von Kern und Zytoplasma eine Rolle spielen.

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Copyright information

© Springer-Verlag 1967

Authors and Affiliations

  • Antti U. Arstila
    • 1
  • Väinö K. Hopsu-Havu
    • 1
  1. 1.Department of Anatomy and the Laboratory of Electron MicroscopyUniversity of TurkuFinland

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