MICA is a ligand for the stress signaling protein and natural killer (NK) cell activating receptor KLRK1/NKG2D. Tumor cells shed the expressed MICA protein and undergo immune evasion. MICA Protein, Human (HEK293, Fc) is the recombinant human-derived MICA protein, expressed by HEK293 , with C-hFc labeled tag.