CCL5 and neoplasm: [33], [34] The RANTES probe in our chemokine protein multiplex assay cross reacted with both human and murine RANTES. Therefore we determined whether the RANTES we detected was human- (tumor cell) or murine- (endothelial cell) derived by re-measuring RANTES levels using a murine-specific ELISA. Our species-specific assay showed high activity of murine endothelium-derived protein but not of its human counterpart (Figure 4B).