The Diversity of Cells in the Thymic Microenvironment of Aplocheilus panchax (Hamilton, 1822)
نویسنده
چکیده
Thymus is a primary lymphoid organ in fish. This gland is situated at the upper most part of the middorsolateral region of the opercular cavity, close to the base of 3 rd and 4 th gill arches. Aplocheilus panchax (Weight-2.5gm. Length-7.5cm.) a fresh water teleost belonging to the Order – Cyprinidontiformes, family – Aplocheilidae is examined under light and transmission electron microscopes (LM and TEM) to study the anatomical position and cellular composition of thymic environment. Histologically, the cortex and medulla is not well demarcated in this gland of A. panchax. The gland is packed with lymphoid cells and well vascularised. Under electron micrograph, the thymic tissue shows different lymphoid and non lymphoid elements. The thymic blood capillary is clearly marked. Apart from that, thymocytes, thymoblast, thymopharyngeal epithelial cell, reticular epithelial cell, rodlet cell, mast cell etc. are also characterized. The appearance of mast cell in thymic environment is also very significant for the assessment of thymic health.
منابع مشابه
Habitat heterogeneity and prey selection of Aplocheilus panchax: an indigenous larvivorous fish.
OBJECTIVE The ability of the native larvivorous fish Aplocheilus panchax (Hamilton, 1822) (Cyprinodontiformes: Aplocheilidae) as predator of mosquito larvae was assessed under laboratory conditions using multiple prey and habitat conditions. METHODS The consumption of larvae of the mosquito Culex quinquefasciatus Say 1823 (Diptera: Culicidae) by A. panchax was evaluated in the presence of tub...
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