Dendritic cell-specific intracellular adhesion molecule-3-grabbing noninte-grin (DC-SIGN) is a member of the C-type lectin family selectively expressed on immune-related cells. In the present study, we performed a systematic interaction analysis of DC-SIGN and its related receptors, DC-SIGN-related protein (DC-SIGNR) and liver and lymph node sinusoi-dal endothelial cell C-type lectin (LSECtin) using frontal affinity chroma-tography (FAC).