Helicobacter species and gut bacterial DNA in Meckel’s diverticulum and the appendix

Figure 1 Microscopic analysis of the Helicobacter pullorum positive Meckel´s diverticulum case. Low power view of a histological section from Meckel´s diverticulum, positive for Helicobacter pullorum (H. pullorum) DNA, in the heterotopic area. There is an unusually well developed lymphatic tissue with germinal centres and a predominance of lymphocytes in the non-heterotopic area. Plasma cells were mainly found in the heterotopic area. The small arrows in the big square, point to a small strip of gastric heterotopia. This area displays at higher magnification in the inset. Large arrows point to gastric glands of corpus type. Blue without arrows in the photo indicates intestinal mucus. Alcian blue-PAS staining pH 2.5.