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The frequency of positive SATB1 expression in patients without and with RT. (A) The frequency of positive SATB1 expression increased from normal mucosa to primary cancers and decreased from primary cancers to lymph node metastases in non-RT patients (*P<0.05). (B) The expression of positive SATB1 in RT patients was obviously higher in biopsies than in primary cancers (*P < 0.05).
