Figure 1

Prostate-specific membrane antigen (PSMA) is detectable in the tumor-associated microvasculature of squamous cell carcinoma of the oral cavity. (a) Representative micrograph of endothelial PSMA staining with staining score 2 (high PSMA expression). (c) Representative micrograph of tumors with PSMA staining score 1 (low PSMA expression). Arrows indicate PSMA-positive micro vessels. (b, d) Corresponding CD31 staining, arrowheads indicate micro-vascular structures.