Figure 2From: Squamous cell carcinoma of the prostate: long-term survival after combined chemo-radiationImmunohistochemistry showed negativity to cytokeratin 7 (a; original magnification 10×) and cytokeratin 20 (b; original magnification 40×). Squamous carcinoma cells also stained negative for PSA and PAP, while adjacent remaining glands stained positive (c, d; original magnification 40×).Back to article page