Biofunctional antibodies can either mimic or interrupt the natural biologic effects associated with ligand-receptor interactions, or have a physiological effect on a target cell or molecule. They may be used in several functional assays, including depletion, activation, neutralization, or blocking experiments. BioLegend offers antibodies in multiple formats for in vivo and in vitro assays. We are also committed to provide the highest quality and standards. That is why we are transitioning our LEAF™ (Low Endotoxin, Azide-Free) purified antibodies to Ultra-LEAF™ formulation. Contact our sales team for quotes on custom and bulk orders.