ANXA1 and fibroma: Consistent with findings in human nasal mucosa [24], we observed nuclear, cytoplasmic, and cell membrane staining for Annexin A1 in the epithelium of all tissue specimens, a pattern different than that for GILZ staining, which was confined to nuclei; however, neither the fractional area of staining nor normalized staining for Annexin A1 clearly differentiated among the OC, OLP and fibroma specimens.