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. 2012 Dec 29;12:182. doi: 10.1186/1471-230X-12-182

Figure 2.

Figure 2

Diagnostic tests for Helicobacter pylori detection: Group A, definitely positive (n=103); Group B, probably positive (n=1); Group C, probably negative (n=0); Group D, past H. pylori infection or false positive (n=2); Group E, definitely negative (n=58); CLO, indicates rapid urease test on biopsy specimens; Histology, refers to H. pylori positive based on modified Giemsa staining; Active gastritis, refers to presence or absence of active gastritis (an indirect sign of active H. pylori infection).