Concurring with a decrease in CCL5 mRNA expression in RKIP expressing breast cancer cells (Fig. 1a), we also observed a decrease in CCL5 protein expression in RKIP-expressing 4T1 tumor (Fig. 4b) by immunohistochemical (IHC) staining with CCL5 specific Ab. This evidence concerns the gene PEBP1 and neoplasm.