BL6, Ccr1-/- and Ccr2-/- mice were subcutaneously injected with LLC1.1 wt cells, the primary tumor was removed on day 14 and BL6 and Ccr2-/- mice were i.v. injected with fluorescently labeled Ccr2-/- enriched CD115+ monocytic cells (Fig. 3 C). The gene discussed is CCR2; the disease is neoplasm.