Fig. 1From: Lipopolysaccharide induces bacterial autophagy in epithelial keratinocytes of the gingival sulcusExfoliative cells in the human gingiva. Representative images of exfoliative cells, stained with Pap staining, from gingival sulcus (a) and free gingiva (b). Blue arrows, keratinized cells; red arrow heads, bacterial colonies. Bar = 50 μmBack to article page