Localization of Actinomyces naeslundii in the chronically inflamed human gingiva was studied by immunohistochemical procedures.
Immunofluorescence was detected on the surface of crevicular epithelium and the tissue adjacent to epithelium.
Especially in a inflammatory connective tissue, Immunofluorescence suggesting phagocytosis by histiocytes round infiltrating lymphocytes was detected. While there was no immunofluorescence in the clinically healthy gingiva.
