ヒト咽頭扁桃の走査型電顕による観察--とくに溝表面の微細構造について

概要

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Human pharyngeal tonsils which were excised surgically from children with an adenoid vegetation were observed under a scanning electron microscope (SEM). The specimens were fixed with 2% glutaraldehyde, 2% tannic acid and 1% osmic acid. After transfer into amyl acetate, the tissues were dried in a critical point dryer and following coating with Au/Pd were observed under a Hitachi HHS-2R SEM.Each tonsil had four to five recesses which run sagittally and were deeply infolded. Many small pores and pits were observed on the luminal surface of the recess. Nonepithelial round cells, extravasate in the lumen through these pores and pits, such as was seen in the palatine tonsil. The subepithelial lymphoid tissues seemed to be connected to the lumen through these pores and pits.From anatomical and histological viewpoints, the structure of the epithelium of the tonsillar recess seems to be constructed so as to be suitable for active immunological function of the pharyngeal tonsil.
耳鼻咽喉科臨床学会の論文