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    A comparative study of oculomotor, trochlear and abducens nerves in Arabian foals
    (Taylor & Francis Inc, 2017) Bolat, D.; Yildiz, D.; Bahar, S.; Yuruker, S.; Kaymaz, F.; Ilgin, C.; Sabanci, S. S.
    We investigated the microscopic structure of transverse sections of the oculomotor, trochlear and abducens nerves of Arabian foals using stereological methods. Bilateral nerve pairs from 2month-old female Arabian foals were analyzed. The tissues were embedded in plastic blocks, then 1 mu m thick sections were cut and stained with osmium tetroxide and methylene blue-azure II. Stereology was performed using light microscopy. Morphometry showed that the right and left pairs of nerves were similar. The transverse sectional areas of the oculomotor, trochlear and abducens nerves were 1.93 +/- 0.19 mm(2), 0.32 +/- 0.06 mm(2) and 0.70 +/- 0.08 mm(2), respectively. The oculomotor nerve exhibited a significantly greater number of myelinated axons (16755 +/- 1279) and trochlear (2656 +/- 494) and the abducens nerves (4468 +/- 447). The ratio of the axon diameter to myelinated nerve fiber diameter was 0.58, 0.55 and 0.55 for the oculomotor, trochlear and abducens nerves, respectively. Of the three nerves studied, the abducens nerve exhibited the greatest nerve fiber area, myelin area, nerve and axon diameters, and myelin thickness. The ratio of small myelinated nerve fibers was greatest in the oculomotor nerve.
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    Comparison of the Morphometric Features of the Left and Right Horse Kidneys: A Stereological Approach
    (Wiley, 2013) Bolat, D.; Bahar, S.; Tipirdamaz, S.; Selcuk, M. L.
    The aims of this study were to determine the total volume of the horse kidney and volume fractions of its functional subcomponents (cortex, medulla, renal pelvis) using stereological methods and investigate any possible difference in the functional subcomponents of the right and left kidneys that may arise from differences in shape. The study was carried out on the kidneys of 5 horses of different breed and sex. The weight of the kidneys was measured by a digital scale, and kidney volume was calculated by Archimedes' principle. Total kidney volume and volume fractions of subcomponents of the right and left kidneys were estimated by the Cavalieri's principle. The weights of the right and left kidneys were 550 +/- 25g and 585 +/- 23g, respectively. The volumes of the right and left kidneys estimated using the Cavalieri method were 542 +/- 46ml and 581 +/- 29ml. The relative organ weight of the kidneys was calculated as 1:330. The densities of the right and left kidneys were determined to be 1.01 and 1.00, respectively. The mean volume fractions of the cortex, medulla and renal pelvis were determined as 55.6, 42.7 and 1.7 in both kidneys. No statistically significant difference existed between morphometric data pertaining to the right and left kidneys (P>0.05). To determine precisely whether differences in shape cause any difference in the functional subcomponents of the right and left kidneys requires further investigation of differences in the number of microscopically functional unit of the kidney such as renal glomeruli and nephrons.