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

  • Mellanby, Edward, Sir, 1884-1955.
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.

    12/48 (page 152)
    of degenerated fibres in the dorsal columns at the lowest medulla level (fig. 7) (compare with the dorsal column of Cervical II (fig. 6)). In examining the individual drawings and comparing them with one another, it will be seen that the actual and relative number of degenerated fibres in many tracts vary in the different segments. Fig. 4. —Thoracic, Segment VII. Fig. 5.—Cervical, Segment VI. Fig. 6.—Cervical, Segment II. Dorsal long, bundle Fig. 7.—Medulla, pyramidal decussation. Drawings illustrating degeneration in brain-stem and spinal cord of a rabbit on a carotene-deficient diet. The following lesions were seen in the brain and cord of rabbits A and B. Lumbar Segment IV (rabbit A) (fig. 3).—There are very few degenerated fibres in the dorsal columns; more are found in the cerebellar tracts and in the ventral columns adjacent to the ventral fissure. There is less degeneration in the lumbar and sacral regions than in any other levels examined. This is in general true for all rabbits fed on these carotene-deficient diets. Thoracic Segment VII (rabbit A) (fig. 4).—There are many more degene¬ rated fibres in this level than in lumbar IY. Dogs brought up on diets