CDKN2A and leukemia: To analyze the expression correlation between the p16 gene and protein, we examined the p16 gene and protein expressions in eight canine lymphoma and leukemia cell lines (B-cells: 17-71, CLBL-1, and GL-1; T-cells: CLC, CLGL-90, Ema, Nody-1, and UL-1) using real-time PCR and western blot analysis, respectively (Figure 1).