Galectin-1/LGALS1 is a lectin that binds beta-galactoside and complex carbohydrates and regulates apoptosis, proliferation, and differentiation. It inhibits CD45 phosphatase activity, blocks Lyn kinase dephosphorylation, and induces T cell apoptosis. Galectin-1/LGALS1 Protein, Human is the recombinant human-derived Galectin-1/LGALS1 protein, expressed by E. coli , with tag free.