Interestingly, expression of MCP-1 (monocyte chemoattractant protein; gene name CCL2), the most potent tumor-secreted monocyte-attracting chemokine [20], dropped in these NFPAs with increasing TAM levels (Figure 1E; Pearson's correlation coefficient for CD11b% vs. PCR: r = −0.482, P = 0.1), a finding that became significant when MCP-1 levels in in blood serum from these patients was quantified using ELISA (Figure 1F; Pearson's correlation coefficient for: CD11b% vs. ELISA: r = −0.622, P = 0.04; PCR vs. ELISA: r = 0.764, P = 0.02). The gene discussed is CCL2; the disease is neoplasm.