Immunohistochemical analysis of EphA2, IL-13Rα2 and Survivin in pediatric glioma specimens. Tissue specimens were stained with specific antibodies against GFAP, EphA2, IL-13Rα2, or Survivin as described in Materials and Methods. Original magnification ×200. High power insets for EphA2, IL-13Rα2, and Survivin were derived from the corresponding low power fields