Applied Microscopy
- Volume 26 Issue 3
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- Pages.349-367
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- 1996
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- 2287-5123(pISSN)
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- 2287-4445(eISSN)
Ultrastructural Study on the Development of the Small Granule-Containing Cells in Superior Cervical Ganglion of Human Fetus
인태아 상경신경절내 소형의 과립함유세포에 관한 전자현미경적 연구
- Yoon, Jae-Rhyong (Department of Anatomy, Chonnam University Medical School) ;
- Min, Young-Don (Department of General Surgery, Cho-sun University Medical College) ;
- Nam, Kwang-Il (Department of Anatomy, Chonnam University Medical School)
- Published : 1996.09.01
Abstract
The development of small granule-containing cell in the superior cervical ganglion was studied by electron microscopic method in human fetuses ranging from 40 mm to 260 mm crown rump length (10 to 30 weeks of gestational age). At 40 mm fetus, the superior cervical ganglion was composed of clusters of undifferentiated cells, primitive neuroblasts, and unmyelinated nerve fibers together with blood vessels. At 90 mm fetus, the superior cervical ganglion consisted of neuroblasts, satellite cell, small granule-containing cells, and unmyelinated nerve fibers. Two morphological types of the small granule-containing cells in the superior cervical ganglion were first indentified at 90 mm fetus, but were rare. Type I granule-containing cell occurred in solitary and had long processes, whereas type II cells tend to appeared in clusters near the blood capillaries. The granule-containing cells were characterized by the presence of dense-cored vesicles ranging from