However, the proportion of BrdU-positive cells was unaffected by the individual depletion of E-selectin (Figure 3a,d), L-selectin (Figure 3b,e), or P-selectin (Figure 3c,f) from the lung-CM, suggesting that lung-derived E-,L-, or P-selectin do not individually influence breast cancer cell proliferation (Figure 2a–f). This evidence concerns the gene SELE and breast cancer.