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(a) Human duodenal biopsy (control) showing nuclear and cytoplasmic expression of Y-Box binding protein 1antibody, ×100; (b) negative nuclear Y-Box binding protein 1 expression; score 3, ×100; (c) moderate positivity of nuclear Y-Box binding protein 1 expression; score 9, ×100; (d) strong positivity of nuclear Y-Box binding protein 1 expression; score 12, ×100
