Figure 1c shows representative examples of stained tissues and figure 1d summarizes the results obtained from 9 adenocarcinoma and 8 benign prostate cancer tissues. As shown, 7/9 and 5/9 prostate adenocarcinomas were positively stained by NKp30-Ig and NKp46D2-Ig, respectively, indicating the existence of ligands for NKp30 and NKp46 on the malignant cells. The expression of these antigens encompassed 50–95% of tumor cells with different degrees of intensities and showed both intracellular and membranal distribution (Figure 1c, arrow at the top left panel points to membrane staining). This evidence concerns the gene NCR1 and prostate adenocarcinoma.