Browsing by Author "Geetha, Ramesh"
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ArticleItem Open Access Comparative Histoarchitectural Study of Splenic Components in Sheep and Goat(Excellent Publishers, 2019) Gnanadevi, R; Senthilkumar, S; Kannan, TA; Geetha, Ramesh; TANUVASAnimal husbandry practices like sheep and goat rearing offer many advantages for beginners and also experienced farmers. They are well suited and productive for the prevailing agro-climatic conditions in India. In mammals, health status is governed by the organ of lymphatic system. Though spleen is the secondary lymphatic organ, it is the largest among the lymphoid organs which plays a crucial role in immune function. For the present study, splenic tissue from adult sheep and goat (6 Nos. each) were collected from Corporation slaughter house, Chennai. Gross, microscopic and immunohistochemical observations were done. Micrometric observations of various structures were also recorded. The spleen of sheep was triangular, whereas, in goat it was roughly quadrangular in outline. In both the species, parenchyma was covered by a thick capsule, predominantly made up of collagen, elastic and smooth muscle fibres. Thickness of capsule in sheep was 150±10.33μ and in goat it was 141±11.5μ. Trabeculae originated from inner side of the capsule and extended in to parenchyma in both the species. Parenchyma was made up of white pulp and red pulp and the proportion of these were almost equal. The white pulp was composed of splenic nodule and peri-arterial lymphatic sheath. Red pulp was compost of irregular splenic cords separated by splenic sinusoids. Immunohistochemical localization of T-lymphocytes revealed the distribution of T-lymphocytes around the PALS and also scattered in the red pulp.ArticleItem Open Access GROSS ANATOMY OF PECTORAL GIRDLE OF OSTRICH (STURTHIO CAMELUS)(TANUVAS, 2003-06) Ushakumary, S.; Geetha, Ramesh; TANUVASThe skeleto-muscular system of the birds is wonderfully adapted both to the flight and to bipedal locomotion: running, walking or lopping on the ground. One reason for this is the complete functional difference between the fore and hind limbs in birds, where the forelimbs alone have become highly modified to form the wings, leaving the hind limbs free to become equally adapted to the functions of walking, take off and landing.ArticleItem Open Access Histological and Immunohistochemical Observations of Supramammary Lymph Node in Sheep and Goat(Excellent Publishers, 2019) Senthilkumar, S; Kannan, TA; Geetha, Ramesh; Sumathi, D; TANUVASLymph node involved in activation and maturation of lymphocytes and stimulates antigenic response against invading foreign substances. Supramammary lymph nodes had high significance in mastitis and other udder infections in small ruminants. For the present study, six supramammary lymph nodes of Madras Red ewe and Boer local she-goat were collected from Chennai corporation slaughter house. Histological and immunohistochemical observations were carried out. In both the species, supramammary lymph node was composed of two parts viz., parenchyma and connective tissue stroma. The lymph node was covered by a fibroelastic capsule composed of collagen, elastic and reticular fibres. Trabeculae originated from the capsule and divided the lymph node into many lobules. Parenchyma composed of an outer cortex and inner medulla. Cortex region contained several lymphoid follicles, which was made by outer mantle zone and inner germinal centre. Statistically no significant difference was observed in micrometric parameters such as capsule thickness, trabeculae thickness, lymphoid follicle diameter, germinal centre diameter and number of follicles per field (50x) between ewe and she-goat. Immunohistochemical staining for CD3+ „T‟ lymphocytes revealed their localization was found to be in interfollicular region and less in germinal centre. Medullary region showed sparsely located „T‟ lymphocytes.ThesisItem Open Access Management of Radial and Tibial Fractures in Dogs Using Linear and Circular External Skeletal Fixators(TANUVAS, 2007) Acharya, Akhila Laxmish; TANUVAS; Kumar, R. Suresh; Ayyappan, S.; Geetha, Ramesh