Fig. 1From: Prevalence of Helicobacter pylori among Sudanese patients diagnosed with colon polyps and colon cancer using immunohistochemistry techniqueDetection of H. pylori using IHC staining technique. a Indicates positive control tissue section of known gastric biopsy infected with H. pylori. b–d Indicates tissue sections of patients diagnosed with colon polyps and colon cancer. Black arrows indicate H. pylori stained brown in color and take a dot and small curved shapes in different sizesBack to article page