Tumor Arg-1 expression levels were high (i.e., above median) in 16 patients (8 with low and 8 with high plasma Arg-1 levels) and were low (i.e., below the median) in 15 patients (8 with low and 7 with high plasma Arg-1 levels) (Figure 3D). The gene discussed is ARG1; the disease is neoplasm.