Ephrin-B1/EFNB1 proteins are cell surface ligands of Eph receptors that critically regulate migration, repulsion, and adhesion during neuronal, vascular, and epithelial development. Ephrin-B1/EFNB1 Protein, Mouse (HEK293, Fc-His) is the recombinant mouse-derived Ephrin-B1/EFNB1 protein, expressed by HEK293 , with C-hFc, C-6*His labeled tag.