CCL4 and diabetes mellitus: Additionally, we verified on the molecular level whether there were any changes in the protein abundance of MIP-1 members and their most important receptors [selected by their degree of affinity for CCL3 (CCR1 and CCR5), CCL4 (CCR1 and CCR5), or CCL9 (CCR1)] in the lumbar spinal cord of mice with a STZ-induced diabetes.