Figure 4From: The prognostic value of the hypoxia markers CA IX and GLUT 1 and the cytokines VEGF and IL 6 in head and neck squamous cell carcinoma treated by radiotherapy ± chemotherapy Example of immunohistochemistry for GLUT-1. Example of biopsy stained for GLUT-1 (×40). This tumor showed a small positive percentage.Back to article page