Detection of GGH protein levels in invasive breast cancer tissues. (A) Immunohistochemical staining of GGH protein expression in primary invasive breast tumors. (B) Western blot analysis of GGH protein levels in 7 primary invasive breast cancer tumors. Note: P = GGH-expressing tumor tissues; N = GGH-negative tumor tissues as assessed by immunohistochemistry; IHC = Immunohistochemistry. GAPDH assesses equal loading.