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Group C. Mucosa with a few cells with intermediate features between intestinal metaplasia and columnar-lined oesophagus, showing initial production of Alcian blue positive mucins, but lacking of goblet cell morphology. a) Aurora A positivity both in Alcian blue negative cells (arrows); double Aurora A/Alcian blue stain. b) Aurora A positivity in cells with initial production of acid mucins (arrows); triple Aurora A/Alcian blue/PAS stain).
