Fig. 4From: Expression of Oct3/4 and Nanog in the head and neck squamous carcinoma cells and its clinical implications for delayed neck metastasis in stage I/II oral tongue squamous cell carcinomaImmunohistochemistry of Oct3/4 and Nanog in TSCC specimens. In the representative cases shown, positive staining of Oct3/4 (a) or Nanog (b) was observed in the nuclei of the tumor cells (arrows). Original magnification: ×200. Scale bar: 100 μmBack to article page