title: Cytochemistry and ultrastructure of gingival sulcus cells.
mesh_terms: D000293:Adolescent; D002648:Child; D004847:Epithelial Cells; D005881:Gingiva / Q000166:cytology*; D006651:Histocytochemistry; D006801:Humans; D007962:Leukocytes / Q000201:enzymology; D008247:Lysosomes / Q000201:enzymology; D008264:Macrophages / Q000201:enzymology / Q000276:immunology; D008407:Mast Cells; D008854:Microscopy, Electron; D010587:Phagocytosis