PTPRC and colorectal carcinoma: To determine with more precision the NK cell infiltrate, NKp46+CD3− cells were evaluated in the same K or N CRC samples, gated on CD45+ cells (gate R2 in Figure 5A): the mean percentage of NKp46+CD3− cells was 1.8%, with seven cases between 4 and 10%, in the tumor areas (K), and 0.87% in N areas (in all but two cases between 2.1 and 3.8%) (Figure 5B, right graph, gated on R3 in the left dot plot).