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A quantitative electron microscopic study of atypical structures in normal human cerebral cortex

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Summary

Biopsy samples of the cerebral cortex from four normal human brains were examined in the electron microscope for the presence of abnormalities related to neurones and neuroglia. Atypical forms of axons, axon terminals and dendrites, many of them similar to those described in a variety of pathological and experimental material, were found to occur in small but appreciable numbers. Neuroglia exhibiting atypical inclusions occurred but were much less common. Physiologically altered neuronal perikarya were not encountered apart from one neuronal death. An area of 3.6 × 105 μ2 was scanned from each brain and atypical structures were categorised and counted. The possible implications of the presence of these structures in normal brain is discussed and the need for neuropathologists and neuroanatomists to be aware of the existence of atypical forms of neuronal processes in normal human and animal brains is emphasised.

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  1. Department of Physiology, Monash University, 3168, Clayton, Victoria, Australia

    Sandra Rees

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Rees, S. A quantitative electron microscopic study of atypical structures in normal human cerebral cortex. Anat. Embryol. 148, 303–331 (1975). https://doi.org/10.1007/BF00319849

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