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. 2005 Aug;73(8):4810–4817. doi: 10.1128/IAI.73.8.4810-4817.2005

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Copyright © 2005, American Society for Microbiology

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FIG. 3. — Antibody levels in mice following oral immunization with EHEC O157:H7 ghosts and challenge with E. coli O157:H7. Each value represents the mean for three mice. (A) Serum IgA antibody titers against EHEC O157:H7 ghosts. (B) Colon IgA antibody titers against EHEC O157:H7 ghosts. (C) Serum IgG antibody titers against EHEC O157:H7 ghosts. Mice were immunized intragastrically with 1 mg EHEC O157:H7 ghosts once (group A) or twice (group B) (⇑). All mice were challenged with 1 × 10⁸ CFU EHEC O157:H7 (CIP 103571) on day 55 (↑).