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Abstract
Endoscopic gastric biopsy specimens from 230 consecutive patients in a North Liverpool District were histologically studied by routine light microscopy and ultraviolet fluorescence after acridine orange staining. Eighty patients with chronic gastritis were further studied with regard to type of gastritis and its activity, presence of Campylobacter pylori (CP), and degree of colonization of the gastric mucosa. Miscellaneous gastritis, gastric ulcers, erosions, neoplasms, and histologically normal specimens were excluded from the study. The results show statistically significant correlation between chronic gastritis and CP (P = 0.01, Mann-Whitney test). The activity of gastritis correlated well with CP, but there was no statistical significance between the density of neutrophils and degree of CP colonization (P > 0.5, Mann-Whitney test). In a small sample of CP-positive specimens acridine orange stain was compared with Warthin-Starry, Giemsa (modified), cresyl fast violet, and haematoxylin and eosin stains. Acridine orange stain in the histologic identification of CP has been used only once before in a large study.