Rabbit Anti-Human Lgals1 monoclonal antibody for IHC-P, WB, FC. Galectin-1 (gal-1) is expressed intracellularly and extracellularly by various normal and pathological tissues. It shows a wide range of biological activity such as apoptosis, cell proliferation and cell differentiation. Gal-1 is overexpressed in endothelial cells of different human tumors, tumor cells, and extracellular matrix. It binds its ligands such as beta-galactoside and a wide array of complex carbohydrates to regulate immune responses.