Figure 1

Immunohistochemistry and apoptosis staining of NPC tissue microarray. A. Positive staining of survivin shown under lower power field and B. Cytoplasm positive staining of survivin in the tumor cells and weak staining of the normal epithelium of nasopharynx (arrow directed) C. Strong positive staining of VEGF in tumor cells; D. Cytoplasm positive staining of VEGF in the tumor cells and weak staining of the normal epithelium of nasopharynx (arrow directed); E. Weak staining of survivin in NPC tumor tissues; F. whereas several apoptotic bodies (arrow directed) were observed.