Fig. 1From: Presence of Porphyromonas gingivalis in esophagus and its association with the clinicopathological characteristics and survival in patients with esophageal cancerImmunohistochemical detection of P. gingivalis in normal esophageal mucosa, and cancerous and adjacent tissues of ESCC. a, b, and c are representative images of P. gingivalis in well differentiated (a), moderately differentiated (b), and poorly differentiated (c) ESCC tissues. Pre-immune rabbit IgG was used as a control to detect the serial tissue sections from the same paraffin-embedded tissue block of: (d) well differentiated-; (e) moderately differentiated-; and (f) poor differentiated ESCC. g Normal esophageal mucosa stained with anti-P. gingivalis anti-serum; (h) and (i) are the representative negative/positive images of P. gingivalis immunostaining in the adjacent cancerous tissues. 20× magnification; scale bar = 50 μm; miniatures in the left corners amplify the area with red arrows Back to article page