Cytoplasmic structures in the ganglion cells of certain Orthoptera, with special reference to the Golgi bodies, mitochondria, ?vacuome,? intracellular trabeculae (trophospongium), and neurofibrillae

1932 ◽  
Vol 53 (1) ◽  
pp. 59-95 ◽  
Author(s):  
H. W. Beams ◽  
Robert L. King
Keyword(s):  
Special Reference ◽  
Ganglion Cells ◽  
Golgi Bodies ◽  
Cytoplasmic Structures

Two New Cell Types in the Retina of a Snail Helix aspersa

1974 ◽  
Vol 32 ◽  
pp. 284-285
Author(s):  
Jean L. Brandenburger ◽  
Richard M. Eakin
Keyword(s):  
Sensory Cell ◽  
Ganglion Cells ◽  
Common Garden ◽  
Cell Types ◽  
Helix Aspersa ◽  
Spherical Nucleus ◽  
Golgi Bodies ◽  
The Common ◽  
Snail Helix Aspersa ◽  
Electron Lucent

Previous studies have described the retina of the common garden snail Helix aspersa to be composed of two cell types: sensory and pigmented. We have now found a third, a ganglion cell, and another kind of sensory cell, both heretofore undescribed.Ganglion cells (Fig. 1) are large (11-16 fan in diameter), ovoid, and few in number. We estimate about 12 per eye. They occur only along the periphery of the retina. Each possesses a large spherical nucleus centrally situated in an electron lucent cytoplasm which contains numerous organelles and in clusions: mitochondria, Golgi bodies, EH, lysosomes, glycogen granules, microtubules, ribosomes, fine filaments and clusters of irregular vesicles. These vesicles (insert, Fig. 1) vary in size (500 A to 1200 A in diameter) and density (clear, granular or dense-cored).

Memoirs: Variations in the Form of the Golgi Bodies during the Development of Neurones

1925 ◽  
Vol s2-69 (275) ◽  
pp. 509-517
Author(s):  
A. SUBBA RAU ◽  
R. J. LUDFORD
Keyword(s):  
Spinal Cord ◽  
Golgi Apparatus ◽  
Ganglion Cells ◽  
Early Stage ◽  
Golgi Body ◽  
Spinal Ganglia ◽  
Golgi Bodies ◽  
Stage Of Development ◽  
The Central Nervous System ◽  
High Degree

1. In the spinal ganglia of the chick of four days the Golgi apparatus or body is in the form of a cluster of granules or rodlets, grouped around the centrosphere, at one side of the nucleus (fig. 1, Pl. 39). 2. In a seven-day chick the Golgi body has increased in size and has begun to spread farther around the nucleus (fig. 3, Pl. 39). 3. All ganglion cells examined, both those of the spinal cord and of ganglia, have the Golgi apparatus in this compacted form during their early stage. 4. At a certain period which varies in the different cells the apparatus spreads out in the cytoplasm (fig. 4, Pl. 39), so that in the adult ganglia the apparatus is more or less scattered throughout the cell (figs. 5, 6, and 7, Pl. 39). 5. It is uncertain to what extent variations in the form of the apparatus, whether reticulate or in the form of individual rodlets, are due to differences in the degree of impregnation with the silver. The plane of the section is also an important factor in determining the appearance presented by the apparatus. 6. The medullary cells of the suprarenal body, which are derived from the central nervous system, have the apparatus in the form of a coiled network or cluster of granules at one pole of the nucleus, similar to the cells of the spinal ganglia at the early stage of development. 7. It is suggested that the scattered form of the Golgi apparatus in adult ganglion cells is an expression of the high degree of metabolism existing in these cells.

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