HAGE protein expression in multiple normal tissue microarrays determined by immunohistochemistry. Immunohistochemical staining demonstrated the in vivo expression of HAGE protein at a high level in testis (O), but not in bladder (A), brain (B), breast (C), colon (D), esophagus (E), heart (F), kidney (G), liver (H), ovaries (I), pancreas (J), prostate (K), thymus (L), lung (M) or uterus (N). No non-specific staining with a rabbit isotype control was obtained in normal testis tissues (P). Visible are spermatogonia (arrow) and mature sperm cells (star). Objective magnification: 40x (inset 100x).