Summary
The ultrastructural features of Bunina type inclusions in the anterior horn cells of a patient dying of amyotrophic lateral sclerosis with dementia appear unique. The Bunina-type inclusions are electron dense aggregates containing, and surrounded by organelle-like membranes. These inclusions appear to be a special type of autophagic vacuole, possibly arising from altered mitochondria.
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Hart, M.N., Cancilla, P.A., Frommes, S. et al. Anterior horn cell degeneration and Bunina-type inclusions associated with dementia. Acta Neuropathol 38, 225–228 (1977). https://doi.org/10.1007/BF00688069
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DOI: https://doi.org/10.1007/BF00688069