Figure 5

Immunohistochemically (diaminobenzidine) stained sections of skin (under ×4 magnification). Photomicrograph A shows malignant glands in the dermis staining positively with CDX2. Photomicrograph B shows the malignant glands positively stained by carcinoembryonic antigen. Photomicrograph C shows negative staining by cancer antigen 125.