Results revealed that cats with mammary carcinoma exhibited higher serum SDF-1 levels (mean value of 8.76 ng/ml; range of values: 0.45-36.72 ng/ml) than healthy cats (mean = 1.28 ng/ml; range of values: 0.38-2.69) ng/ml), with a significant p-value of 0.035 (Figure 2). The gene discussed is CXCL12; the disease is breast carcinoma.