Product Description: The product contains the polyhedrin protein co-crystalized with Human R-Spondin 3. R-Spondin 3, is a member of the family of Wnt modulators. All R-Spondins regulate Wnt/β-catenin signaling, but have distinct expression patterns. R-Spondin 3 induces and regulates the proliferation and differentiation of certain stem cell populations.