CD68 and neoplasm: Table 2 shows the distribution of total macrophages and their subtypes in the tumor center and periphery. Among the macrophage subtypes, CD68+CD163+ CD206neg and CD68+CD206+ CD163neg M2 macrophages had higher densities than the CD68+CD86+ MRP8-14neg and CD68+MRP8-14+CD86neg M1 macrophages, in both the tumor center and periphery.