M. Lutfi  Selcuk, Sadullah  Bahar, 
    The Morphometric Properties of the Lumbar Spinal Cord Segments in Horses,
    Journal of Animal and Veterinary Advances,
    Volume 13,Issue 11,
    2014,
    Pages 653-659,
    ISSN 1680-5593,
    javaa.2014.653.659,
    (https://makhillpublications.co/view-article.php?doi=javaa.2014.653.659)
    Abstract: The aim of this study was to determine morphometric features 
  of lumbar segments of the spinal cord of horses. Spinal cords of six horses 
  from different breeds and sexes were used. Lumbar parts of the cords were dissected 
  out from vertebral columns and segmentation was performed. Macroscopic measurements 
  were done on the segments and then routine histological procedure was applied. 
  Segments were sliced transversally at 3.8 mm thickness. Samples were cut at 
  10 μm thickness and stained with May-Grunwald-Giemsa. Slides images were 
  used by stereo investigator. Diameter measurements were carried out and area 
  and volume calculations were performed by using Cavalieri principle. The weight, 
  length and volume ratios of the lumbar parts to spinal cord were 14.7, 13 and 
  14%, respectively. A decrease in lengths of the segments from L<SUB>1</SUB> 
  to L<SUB>6</SUB> was observed. In the microscopic analysis, L<SUB>4</SUB> and 
  L<SUB>5</SUB> had the biggest transverse diameters however L<SUB>6</SUB> had 
  the largest vertical diameter. L<SUB>5</SUB> had the largest values of cross-sectional 
  and white matter area however L<SUB>6</SUB> had the largest value of gray matter. 
  Volumes of all segments except for L<SUB>6</SUB> were similar to each other 
  and the largest volume of gray matter and the largest volume of white matter 
  were observed in L<SUB>5</SUB> and L<SUB>3</SUB>, respectively. It was determined 
  that the volume ratio of gray matter to the volumes of segments increased from 
  L<SUB>1</SUB> to L<SUB>6</SUB> whereas volume of white matter was decreased 
  in those segments. In conclusion, the data obtained will contribute to the morphology 
  of related region and the further studies.
    Keywords: lumbar segments;spinal cord;Cavalieri principle;segmental morphometry;gray matter