Lesions of the central and peripheral nervous systems produced in young rabbits by vitamin A deficiency and a high cereal intake / by Edward Mellanby.

  • Edward Mellanby
Date:
[1935?]
Catalogue details

Licence: In copyright

Credit: Lesions of the central and peripheral nervous systems produced in young rabbits by vitamin A deficiency and a high cereal intake / by Edward Mellanby. Source: Wellcome Collection.

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    longitudinal bundle and in the rubro-spinal decussation. A few fibres of the 3rd nerve also take up Marchi stain. Although there is no degeneration in the internal capsule or the pyramidal tract of the lower brain stem, there are a few degenerated fibres in the crusta of this level. Cervical, Segment II (rabbit B) (fig. 13).—It has previously been noted Rabbit A. Dorsal long, bundle Superior olivary nucleus 8th nerve 7th nerve Ventral spino-cerebellar Rubro-spinal 6th nerve Spino-tectal and spino- reticulQ-thalamic Dorsal long, bundle Rubro spinal decussation Crusta Fig. 12.—Superior corpora quadrigemina. Drawings illustrating degeneration in brain-stem and spinal cord of a rabbit on a carotene-deficient diet. Spino-tectal that in rabbit B the degeneration is most prominent in the fillet and dorsal longitudinal bundle, whereas in rabbit A the heaviest degeneration is in the cerebellar tracts. This can be seen by comparing figs. 6 and 13. In rabbit B many fibres of the dorsal columns show very advanced degeneration with absorption of the myelin, and, as might be expected, there is also advanced degeneration of the second neurons of this path in the mesial fillet but no