| [[Adenoids|Adenoid|Pharyngeal tonsil]] (also termed "pharyngeal tonsiladenoi") ||[[pseudostratified epithelium|Ciliated pseudostratified columnar]] ([[respiratory epithelium]]) || Incompletely encapsulated || Small folds—sometimes described as crypts<ref>{{cite journal | vauthors = Fagö-Olsen H, Dines LM, Sørensen CH, Jensen A | title = The Adenoids but Not the Palatine Tonsils Serve as a Reservoir for Bacteria Associated with Secretory Otitis Media in Small Children | journal = mSystems | volume = 4 | issue = 1 | date = 12 February 2019 | pmid = 30801022 | pmc = 6372837 | doi = 10.1128/mSystems.00169-18 | name-list-style = vanc }}</ref> || Roof of [[pharynx]]
