Intranuclear Bundles of Microfilaments and Microtubules in Chromaffin Cells of the Auricle of the Heart of a Lungfîsh, Protopterus aethiopicus
作者:
Dietrich W. Scheuermann,
Dirk Adriaensen,
Marie H.A De Groodt-Lasseel,
期刊:
Cells Tissues Organs
(Karger Available online 1988)
卷期:
Volume 133,
issue 3
页码: 173-182
ISSN:1422-6405
年代: 1988
DOI:10.1159/000146636
出版商: S. Karger AG
关键词: Intranuclear inclusions;Microfilaments;Microtubules;Chromaffin cells;Lungfish
数据来源: Karger
摘要:
Intranuclear microtubular-microfilamentous rod-like inclusions were investigated in chromaffin cells of the auricle of the heart of lungfishes. In conventional electron microscopy, these inclusions reveal a wide variety in appearance, depending on their orientation to the plane of sectioning. Whereas originally they were merely interpreted as a bundle of microfilaments, application of a goniometer stage showed the rod- or spindle-shaped intranuclear inclusions to have a basic substructure of parallel arranged microtubules among microfilaments, which are clearly connected to chromatin granules, occasionally penetrating dense areas of chromatin.The chemical nature and biological significance of these structures, which so far remain enigmatic, are discussed.
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