FRZB protein is a soluble Frizzled-related protein (sFRP) that modulates Wnt signaling by directly interacting with Wnt, thereby regulating cell growth and differentiation. FRZB, also known as SFRP3, plays a key role in limb skeletogenesis as a Wnt8 signaling antagonist. FRZB Protein, Human (HEK293, His) is the recombinant human-derived FRZB protein, expressed by HEK293 , with C-His labeled tag.