The Nervus Terminais in Urodele Amphibia: A Dissertation Submitted to the Faculty of the Ogden Graduate School of Science in Candidacy for the Degree of Doctor of Philosophy, Department of Anatomy (Cl - Hardcover

Paul Stilwell McKibben

9780265946657: The Nervus Terminais in Urodele Amphibia: A Dissertation Submitted to the Faculty of the Ogden Graduate School of Science in Candidacy for the Degree of Doctor of Philosophy, Department of Anatomy (Cl

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ISBN 10: 0265946654 ISBN 13: 9780265946657

Publisher: Forgotten Books, 2018

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Excerpt from The Nervus Terminais in Urodele Amphibia: A Dissertation Submitted to the Faculty of the Ogden Graduate School of Science in Candidacy for the Degree of Doctor of Philosophy, Department of Anatomy

In an examination of the olfactory nerve of adult N ecturus there have been found a few scattered cells whose contour and processes make them appear much like nerve cells. These cells have been observed not only in the olfactory nerve but also in the connective tissue surrounding the nasal sac and in the menin ges of the brain in all its parts. On close examination the cytoplasm of these cells surrounding the nucleus and contained in the long branching processes, is seen to enclose sharp granules rather uniformly distributed which stain with the basic dyes, (figs. 44, 45, These granules stain metachromatically with toluidine blue and give no positive test for iron by Mc Callum's method. In Amblystoma larvae of thirty millimeters and over (fig. The granules are relatively larger in proportion to the size of the cell and not so numerous as in adult Necturus. The granules of these cells in adult Necturus stain intra vitam with neutral red and methylene blue, with neutral gentian, toluidine blue and violet 53 after fixation in formaline - Zenker, and can be recognized in Weigert, iron haematoxylin, Vom Rath, Golgi and Cajal preparations. They are not nerve cells and correspond undoubtedly to the 'clasmatocytes' of Ranvier which are really mast cells, as Maximow '05) has defi nitely shown.

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