The bone marrow-derived multipotent mesenchymal stromal cells, under the influence of interleukin-6 (IL6) and chemokine (C-X-C motif) ligand-7 (CXCL7; also known as the pro-platelet basic protein), reportedly are capable of enriching the population of BCSCs in the tumor [157]. Here, PPBP is linked to neoplasm.