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A. Cytosponge® in gelatin capsule (right) and expanded (left).
B, C. Haematoxylin and eosin (B) and trefoil-factor 3 (C) staining (20×) from patient with Barrett’s oesophagus showing columnar lined epithelium with goblet cells (arrowheads) (courtesy of dr Maria O’Donovan)
D. Haematoxylin and eosin staining (200×) from patient with eosinophilic oesophagitis showing squamous epithelium with admixed eosinophils (arrowheads)
