Histological and Ultrastructural Examinations of Porcine Tonsils
Histological and Ultrastructural Examinations of Porcine Tonsils
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DOI：
10.1002/ar.21534
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发表时间：
2012-04-01
影响因子：
2
通讯作者：
Yang, Qian
中科院分区：
文献类型：
--
作者：
Liu, Zhixue;Yu, Qinghua;Yang, Qian
对猪扁桃体进行了组织学和超微结构研究。猪扁桃体是位于消化道和呼吸道开口处的淋巴上皮器官。口咽束的软腭扁桃体和咽喉部的会厌旁扁桃体主要由结缔组织包裹的次级淋巴滤泡组成。复层鳞状上皮覆盖扁桃体及其腺窝，淋巴样细胞浸润频繁。咽扁桃体和输卵管扁桃体（TT）位于鼻咽部。咽部和TT的假复层柱状上皮细胞连接疏松，细胞间隙大。它们由散在的淋巴滤泡、淋巴细胞聚集体和弥漫性淋巴组织组成。在四只猪扁桃体中均发现了许多高内皮微静脉，这些微静脉专门用于淋巴细胞向扁桃体组织的渗出。因此，扁桃体的整体结构（软腭扁桃体、会厌旁扁桃体、咽扁桃体和TT）反映了它们在口腔和鼻内免疫中的免疫功能。Anat Rec，295：686-690，2012. (C)2011 Wiley Periodicals，Inc.
The histology and ultrastructure of porcine tonsils were studied. The porcine tonsils were lymphoepithelial organs situated at the opening of both the digestive and respiratory tracts. The tonsil of the soft palate in the oropharyngeal tract and the paraepiglottic tonsil in the laryngopharynx were mainly consisted of secondary lymphoid follicles encapsulated by connective tissue. The stratified squamous epithelia covering the tonsils and their crypts were frequently heavily infiltrated by lymphoid cells. The pharyngeal and tubal tonsils (TT) were situated in the nasopharyngeal tract. The cells of the pseudostratified columnar epithelia of the pharyngeal and TT were loosely connected, with large intercellular space. They consisted of scattered lymphoid follicles, aggregations of lymphoid cells and diffuse lymphoid tissues. Many high endothelial venules, specialized for the diapedesis of lymphoid cells into the tonsillar tissue, were detected in the four porcine tonsils. Therefore, the overall structures of the tonsils (the tonsil of the soft palate, the paraepiglottic tonsil, the pharyngeal and the TT) reflect their immune functionality in the oral and intranasal immunity. Anat Rec, 295: 686-690, 2012. (C) 2011 Wiley Periodicals, Inc.