J2 1 Spinal Ganglion Cells
^ Human and animal cells are dedicated to specialized functions within the or-vJ ganism, and their sizes, shapes and structures vary accordingly. Spinal ganglion cells are mostly pseudounipolar neurons and can be spherical, ellipsoid, or pear-shaped, with diameters between 20 and 120|m. The round cell nuclei, up to 25 |im in size, contain little chromatin H. The nuclei always have a clearly visible nucleolus (2-4|im). Glial cells form a layer around the spinal ganglion cells. Therefore, they are also called satellite cells [2. The small round or spindle-shaped nuclei of these satellite cells stand out because they are heavily stained. There are delicate connective tissue fibers (endoneu-rium) and nerve fiber bundles (fascicles) [3 between the ganglion cells. In the upper right of the figure, a wide strand of connective tissue (stained blue) traverses the section (cf. Figs. 32, 66, 256, 671-674).
1 Nucleus with clearly visible nucleolus
2 Satellite cells
3 Nerve fibers
4 Capillaries
Stain: azan; magnification: x 400
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