As the CC chemokine CCL17 is exclusively expressed by a myeloid-related mature subset of cDCs [29], we used mice with a targeted replacement of the Ccl17 gene by the enhanced green fluorescent protein gene (Egfp, Ccl17E/E) in order to elucidate the localization and function of CCL17+ DCs in atherosclerosis. The gene discussed is CCL17; the disease is atherosclerosis.