Morphological Aspects of Formation of Neuronal Pathways in the Chick Spinal Cord—Golgi and Electron Microscopic Studies

Author(s):  
A. Kanemitsu ◽  
S. Matsuda ◽  
Y. Kobayashi
1992 ◽  
Vol 117 (1) ◽  
pp. 59-70 ◽  
Author(s):  
N. Rajaofetra ◽  
N. König ◽  
P. Poulat ◽  
L. Marlier ◽  
F. Sandillon ◽  
...  

1996 ◽  
Vol 33 (3) ◽  
pp. 365-366 ◽  
Author(s):  
D. Y. Rim ◽  
D. Y. Cho ◽  
H. W. Taylor

Lysosomal storage disease involving the brain, spinal cord, liver, and spleen was discovered in a 6-month-old male emu ( Dromaius novaehollandiae). The diagnosis was based on light and electron microscopic studies and histochemical staining characteristics. This is the first case of lysosomal storage disease reported in a ratite.


Author(s):  
G. Yajima ◽  
S. Kurihara ◽  
M. Ida ◽  
K. Aihara ◽  
G. Asano ◽  
...  

The spontaneous hypertensive rats are the strain which was isolated by Okamoto et al and is known to cause high frequency of spontaneous hypertension in later stage of life. Some of them are also recongnized to have high frequency of the cerebro-vascular accident and is also designated as apoplexy prone strain. The genetic and etiological factors of this spontaneous hypertension are the matters of the extensive survey of the investigators, however, the morphological aspects of this specific strain of causing the hypertension still await further confirmation in future. In this viewpoint, the authors have undertaken the electron microscopic and cytochemical electron microscopic studies of the various arteries in a rather extensive manner.The spontaneous hypertensive rats were supplied from the animal room of the University of Kyoto by courtesy of Drs. Okamoto and Yamori. The rats were kept on the commericially available solid diet and sytolic blood pressure was measured and scored daily.


Recent findings on the afferent and efferent connexions of the striatum (the caudate nucleus and putamen) and globus pallidus have been summarized in an orderly sequence. The striatum receives afferent fibres from three main sources, the cerebral cortex, the intralaminar nuclei of the thalamus and the midbrain; the major features of each of these pathways are outlined. The striatum sends efferent fibres to the globus pallidus and the substantia nigra, and the two segments of the globus pallidus in turn project upon the subthalamic nucleus and upon the thalamus and midbrain tegmentum. Through the thalamus the major influence of the striopallidum is upon the motor area of the cerebral cortex, and it is suggested that through the midbrain tegmentum there may also be a descending influence upon the spinal cord. These findings from light microscopical investigations are synthesized with observations made in electron microscopic studies of the striatum and globus pallidus. On the basis of present knowledge of their structure and connexions attention is drawn to several marked similarities between these parts of the basal ganglia and the cerebellum.


1969 ◽  
Vol 4 (3) ◽  
pp. 729-737
Author(s):  
FELICITY GRAINGER ◽  
D. W. JAMES

Electron-microscopic examination of processes growing out from chick spinal cord cultivated in vitro raises the possibility that mitochondria may be continuous with a system of membrane-bound profiles ramifying within the cytoplasm. These profiles are distinctive in appearance, and appear to establish a particular spatial relationship with microtubules. In this, dense material extends from the profiles to constitute a meshwork within whose interstices tubules lie. The suggestion is made that these appearances may reflect the utilization of the products of mitochondrial activity for transport by microtubules.


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