MDC (CCL22)—also known as CC chemokine STCP-1, small-inducible cytokine A22 (SCYA22), and stimulated T-cell chemotactic protein 1—is a protein that is chemotactic for monocytes, dendritic cells, and natural killer cells. It plays a role in the trafficking of activated T-lymphocytes to inflammatory sites and other aspects of activated T-lymphocyte physiology. It is implicated in atopic dermatitis and gastric carcinoma. The NHP MDC Kit provides assay-specific components for the quantitative determination of endogenous MDC in non-human primate urine, serum, plasma, and cell culture supernatants.