CD4 and neoplasm: Within the CD45-positive bead-enriched compartment, we observed a significantly higher percentage of CD11b+ myeloid cells within the tumor microenvironment (percent mean ± SEM = 55 ± 5.66%) as compared to CD4+ T-cells (percent mean ± SEM = 9.41 ± 1.97%) and few to no CD8+ T-cells (percent mean ± SEM = 0.204 ± 0.155%) (n = 6 tumor-bearing females) (Figure 1b).