European Journal of Anatomy
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Publications in this journal
- European Journal of Anatomy 08/2014; 18(3):171-174.
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ABSTRACT: The gross morphology and histology of the skin of the trunk and paw pads in the African giant pouched rat were investigated to evaluate their role in the adaptation of the rodent to its subterranean environment. Samples were stained with haematoxylin and eosin, Masson’s trichrome, Alcian blue, Verhoeff's haematoxylin counterstained with Van Gieson, and Weigert’s haematoxylin counterstained with Picro-Ponceau stains. Dorsally, fur covering the skin was loosely folded. Fur covered the entire trunk to the level of the radiocarpal and talocrural joints of the forelimb and hindlimbs, respectively. Skin of the dorsum was paler than its grey-coloured fur, while skin of the ventrum was dirty white. There were more hair follicles dorsally then ventrally. The manus and pes had five and six paw pads, respectively. Keratinocytes in the epidermis of the paw pads decreased in number and lost their cellular contents as they migrated towards the stratum lucidum. Metatarsal pads had a significantly (P < 0.001) thicker stratum corneum than metacarpal pads. Elastic fibres were observed in the metatarsal pads. Other results and additional information from the literature were integrated to propose the effect of the structures on the adaptation of the African giant pouched rat to its subterranean environment and tropical climate.European Journal of Anatomy 07/2014; 18(3):175-182.
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ABSTRACT: Langerhans cells (LCs) are the predominant antigen-presenting cells distributed in the mucosa of various organs with high antigenic exposure. They capture antigens, process and present them to the T lymphocytes. LCs are known to be present in the human female reproductive tract. Very few studies have demonstrated the presence of LCs in human uterine tubes. The aim of the present study was to demonstrate the morphology and distribution of LCs in the normal and postpartum human uterine tube by electron microscopy. Tissues from two normal and three postpartum uterine tubes were studied under electron microscopy. The epithelium of the uterine tube varied from simple ciliated columnar epithelium to stratified ciliated columnar epithelium. LCs with a single dendritic process could be identified in the epithelium. The dendritic process displayed the unique Birbeck granules in the cytoplasm. Close apposition of LCs with the intraepithelial lymphocytes was noted. In addition, there were M cells in the epithelium of the normal uterine tube. In the lamina propria, LCs with two or three processes were present which displayed Birbeck granules. They were in close association with lymphocytes as well as with the endothelial cells of the capillaries. A few high endothelial venules (HEVs) were present in the lamina propria of the postpartum uterine tube. The presence of LCs, M cells and HEVs in the uterine tube indicates that the uterine tube is an integral part of mucosa-associated lymphoid tissue.European Journal of Anatomy 01/2014; 18(4):253-260.
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