2.4 POJA-L1066-1067-1068. Pharyngeal tonsil (gut-associated lymphatic tissue or GALT) (human)
2.4 POJA-L1066+1067+1068
Title: Pharyngeal tonsil (gut-associated lymphatic tissue or GALT) (human)
Description: Stain: azan. The combination demonstrates stages of infiltration (=diapedesis) of lymphocytes in the epithelium of the pharyngeal tonsil.
The pharyngeal tonsil or adenoid is located in the nasopharyngeal roof. The agglomerations of lymphocytes (4) are covered by (1) pseudostratified ciliated epithelium with goblet cells (2) included. Locally islands of multilayered squamous epithelium occur (A, 5). The epithelium is usually infiltrated with lymphocytes (black arrows→), what may cause desquamation (3) of the epithelium. The blue arrows (C) indicate antigen presenting cells (APC´s) which show a large pale nucleus and a conspicuous nucleolus. The surface is enlarged by micro folds. Strands of connective tissue are stained blue and continue in a fine lymphoreticular tissue between the lymphocytes.
Keywords/Mesh: lymphatic tissue, pharyngeal tonsil, ciliated epithelium, squamous epithelium, histology, POJA collection
Title: Pharyngeal tonsil (gut-associated lymphatic tissue or GALT) (human)
Description: Stain: azan. The combination demonstrates stages of infiltration (=diapedesis) of lymphocytes in the epithelium of the pharyngeal tonsil.
The pharyngeal tonsil or adenoid is located in the nasopharyngeal roof. The agglomerations of lymphocytes (4) are covered by (1) pseudostratified ciliated epithelium with goblet cells (2) included. Locally islands of multilayered squamous epithelium occur (A, 5). The epithelium is usually infiltrated with lymphocytes (black arrows→), what may cause desquamation (3) of the epithelium. The blue arrows (C) indicate antigen presenting cells (APC´s) which show a large pale nucleus and a conspicuous nucleolus. The surface is enlarged by micro folds. Strands of connective tissue are stained blue and continue in a fine lymphoreticular tissue between the lymphocytes.
Keywords/Mesh: lymphatic tissue, pharyngeal tonsil, ciliated epithelium, squamous epithelium, histology, POJA collection