Histologic section of the biopsy sample. A. The specimen from the antral lesions
of chronic active gastritis was stained with hematoxylin and eosin. Infiltration by
mononuclear cells and grandular atrophy and intestinal metaplasia could be observed.
Magnification, 140. B. H. pylori-like bacteria were stained with Giemsa in the gastric
pit of the same antral biopsy specimen as in panel A. Arrows indicate curved bacilli.
Magnification, 1000.