Figure 2From: Prostate cancer metastases to the rectum: A case report(Top) Sections showing tumor acini adjacent to a normal colonic crypt (Hematoxylin & Eosin ×400); (Bottom) Staining of the same microscopic focus with anti-PSA antibody, showing that tumor cells were positive while normal colonic crypts were negative (immunohistochemistry-PSA ×400).Back to article page