Abstract：
:The long nonmyelinated portion of the unipolar process of spinal ganglion cells resembles in many instances the perikaryon and is characterized by the following structural pecularities: 1. The surface membrane displays numerous invaginations and evaginations, which interdigitate with folds of the investing satellite cells, resulting in a considerable increase of the area of intercellular contact. The intercellular gap frequently widens to intercellular cisternae. 2. The axolemma of the most distal part of the nonmyelinated portion is undercoated by dense material and thus resembles the "initial segment" of multipolar nerve cells. 3. The unipolar process of spinal ganglion cells shows a conspicuously high density of neurotubules. The neurotubules frequently collect into fascicles in the same manner as was described for the initial segment of multipolar nerve cells. 4. The nonmyelinated part as well as the first internodes of the myelinated part of the unipolar cell process contain a highly developed axoplasmic reticulum, many-partly huge-mitochondria, a striking number of dense bodies and clusters of ribosomes. The myelin sheath of the first internodes of the unipolar process is unusually thin in relation to their axon diameters. At successive internodes the thickness of the myelin sheath increases stepwise, the Schwann cell loops of the paranodal zones changing their appearence correspondingly. In the great number of ultrathin sections scanned in this study, not one synapse was found, neither in the unmyelinated initial segment nor in the soma.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Zenker W,Högl Edoi
10.1007/BF00222438keywords:
subject
Has Abstractpub_date
1976-01-27 00:00:00pages
345-63issue
3eissn
0302-766Xissn
1432-0878journal_volume
165pub_type
杂志文章abstract：:Morphological changes in the disconnected neuro-intermediate lobe were studied in the lizard, Anolis carolinensis from the 2nd to the 14th post-operative day using a threefold aldehyde fixative (Rodríguez, 1969). Two phases of colour change capacity were exhibited: Phase I started immediately after the transection, la...
journal_title：Cell and tissue research
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
pub_type： 杂志文章,评审
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journal_title：Cell and tissue research
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更新日期：1981-01-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：2006-01-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-005-1118-4
更新日期：2005-08-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219756
更新日期：1988-09-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219363
更新日期：1981-01-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
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更新日期：1994-09-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：1982-01-01 00:00:00
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
pub_type： 杂志文章
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journal_title：Cell and tissue research
pub_type： 杂志文章
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journal_title：Cell and tissue research
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：1979-06-08 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：1982-01-01 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：1976-06-28 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
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更新日期：1975-09-16 00:00:00
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journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00218889
更新日期：1989-01-01 00:00:00
