Summary
The terminal degeneration in the substantia gelatinosa of the rat was studied with the Fink-Heimer silver technique following dorsal root section. Providing the survival time of the animal was in the range of 1–4 days, a massive degeneration was seen in lamina I, II and III of Rexed. The light microscope findings were corroborated by electronmicroscopic observations of degenerating boutons. Spinal cord material examined with silver methods one week after dorsal root section showed few signs of degeneration in the substantia gelatinosa. Although a significant dorsal root distribution to the substantia gelatinosa was found also in the cat, the terminal degeneration in lamina II showed considerable regional variations in this species.
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Heimer, L., Wall, P.D. The dorsal root distribution to the substantia gelatinosa of the rat with a note on the distribution in the cat. Exp Brain Res 6, 89–99 (1968). https://doi.org/10.1007/BF00239164
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DOI: https://doi.org/10.1007/BF00239164