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Intracellular Helicobacter pylori in human gastric epithelium in vivo. A well-preserved Helicobacter pylori (H. pylori) organism in a cytoplasmic vacuole, enlarged in a (55 200 ×; 15 nm gold particles) to show immunoreactivity with anti-VacA antibody. Note two H. pylori in a luminal cleft (top left, 13 500 ×). Reprinted from Necchi et al[57], with permission from Elsevier.
