CCR5 and neoplasm: In contrast, EO771 tumors implanted in CCR5 null mice transplanted with WT BM (CCR5-/-:WT) showed significantly reduced growth (Figure 3A and Supplementary Table S5A), and a significant reduction in vessel branching (P < 0.0001), as well as a reduction (~50 %) in numbers of CCR5+ tumor-recruited endothelial cells (P < 0.0001) (Figure 3B, 3C, and Supplementary Table S5B, S5C).