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Table 1 Prevalence of cagA and allelic variants of vacA on the H. pylori strains isolated from patients with ulcer or NUD

From: cagA and vacA in strains of Helicobacter pylori from ulcer and non-ulcerative dyspepsia patients

Gastroduodenal condition CagA VacA
  CagA + CagA - S1 S2 m1 m2 m1m2
Ulcers * 15 (60%) 10 (40%) 16 (62%) 9 (38%) 13 (52%) 11 (44%) 1 (4%)
NUD ** 21 (55%) 17 (45%) 20 (53%) 18 (47%) 14 (37%) 23 (60%) 1 (3%)
  1. *Strains isolated from ulcer patients (N = 25) **Strains isolated from NUD patients (N = 38)