Figure 1.

Immunohistochemical expression of beta catenin in oral cancer. (a) Normal membranous staining in oral epithelium surrounding OSCC (x400); (b) strong cytoplasmic increase with membranous overexpression in OSCC (x200); (c) cytoplasmic downregulation expression (x400); (d) strong nuclear cytoplasmic expression (x200); (e) lymph node metastasis from OSCC showing cytoplasmic expression (x40); (f) further detail of cytoplasmic expression in lymph node metastasis (x200); LSAB-HRP technique, nuclear counterstaining with haematoxylin.