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The tonsillar mucosa was lined by pseudostratified columnar ciliated epithelium having goblet cells. The respiratory epithelium associated with the underlying lymphoid tissue formed the lymphoepithelium. The epithelium was further modified into follicle\u2010associated epithelium (FAE) characterized by reduced epithelial height, presence of a few dome\u2010shaped cuboidal cells equivalent of the M\u2010cells and absence of goblet and ciliated cells. The lymphoid tissue was distributed in the form of isolated lymphoid cells, diffuse lymphoid tissue and lymphoid follicles, mainly distributed within the propria\u2010submucosa along with the sero\u2010mucous glandular tissue. The goblet cells of the respiratory epithelium and the acinar cells contained different mucopolysaccharides. Scanning electron microscopy of the surface mucosa demonstrated a dense mat of cilia, island\u2010like arrangement of microvillus cells, M\u2010cells and a few brush\u2010like cells. The transmission electron microscopy revealed the different cell organelles of the respiratory epithelium and the FAE. Lymphocyte migration via the high endothelial venules in the propria\u2010submucosa was also observed.<\/jats:p>","DOI":"10.1111\/ahe.12452","type":"journal-article","created":{"date-parts":[[2019,6,7]],"date-time":"2019-06-07T14:50:41Z","timestamp":1559919041000},"page":"375-383","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Histology, histochemistry and ultrastructure of the nasopharyngeal tonsil of the buffalo (<i>Bubalus bubalis<\/i>)"],"prefix":"10.1111","volume":"48","author":[{"given":"Ibrahim Alhaji","family":"Girgiri","sequence":"first","affiliation":[{"name":"Department of Veterinary Anatomy, College of Veterinary Sciences Lala Lajpat Rai University of Veterinary and Animal Sciences Hisar Haryana India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1497-495X","authenticated-orcid":false,"given":"Pawan","family":"Kumar","sequence":"additional","affiliation":[{"name":"Department of Veterinary Anatomy, College of Veterinary Sciences Lala Lajpat Rai University of Veterinary and Animal Sciences Hisar Haryana India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,6,7]]},"reference":[{"doi-asserted-by":"publisher","key":"e_1_2_10_2_1","DOI":"10.1007\/s11250-016-1139-x"},{"doi-asserted-by":"publisher","key":"e_1_2_10_3_1","DOI":"10.1016\/j.jcpa.2006.04.004"},{"key":"e_1_2_10_4_1","first-page":"502","article-title":"Lack of relation between expression of HLA\u2010DR and secretory component (SC) in follicle\u2010associated epithelium of human Peyer\u2019s patches","volume":"71","author":"Bjerke K.","year":"1988","journal-title":"Clinical Experimental Immunology"},{"doi-asserted-by":"publisher","key":"e_1_2_10_5_1","DOI":"10.1016\/j.ijporl.2003.08.018"},{"doi-asserted-by":"publisher","key":"e_1_2_10_6_1","DOI":"10.1159\/000324588"},{"doi-asserted-by":"publisher","key":"e_1_2_10_7_1","DOI":"10.1016\/B978-0-12-415847-4.00031-8"},{"doi-asserted-by":"publisher","key":"e_1_2_10_8_1","DOI":"10.1016\/S1286-4579(01)01445-9"},{"doi-asserted-by":"publisher","key":"e_1_2_10_9_1","DOI":"10.1155\/2011\/472460"},{"doi-asserted-by":"publisher","key":"e_1_2_10_10_1","DOI":"10.1002\/ar.21098"},{"doi-asserted-by":"publisher","key":"e_1_2_10_11_1","DOI":"10.1111\/j.1439-0264.2008.00858.x"},{"doi-asserted-by":"publisher","key":"e_1_2_10_12_1","DOI":"10.1016\/j.cimid.2013.03.002"},{"doi-asserted-by":"publisher","key":"e_1_2_10_13_1","DOI":"10.1016\/j.vetimm.2007.07.010"},{"doi-asserted-by":"publisher","key":"e_1_2_10_14_1","DOI":"10.1016\/B978-0-12-374279-7.07005-3"},{"doi-asserted-by":"publisher","key":"e_1_2_10_15_1","DOI":"10.1016\/0021-9975(89)90042-X"},{"doi-asserted-by":"publisher","key":"e_1_2_10_16_1","DOI":"10.1016\/S0021-9975(08)80087-4"},{"key":"e_1_2_10_17_1","first-page":"1720","article-title":"Gut\u2010associated lymphoid tissue of young swine with emphasis on dome epithelium of aggregated lymph nodules (Peyer's patches) of the small intestine","volume":"40","author":"Chu R. 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