CD97, a receptor crucial for leukocyte migration, participates in adhesion and signaling during early leukocyte activation. Forming a heterodimer with a large extracellular alpha subunit and a seven-transmembrane beta subunit, CD97 interacts with complement decay-accelerating factor (DAF). The largest isoform (isoform 1) specifically engages with chondroitin sulfate, showcasing its diverse roles in cellular processes. CD97 Protein, Human (HEK293, hFc) is the recombinant human-derived CD97 protein, expressed by HEK293 , with C-hFc labeled tag.