Santa Cruz Biotechnology is expanding our monoclonal antibody product line. We offer monoclonal antibodies directed against proteins involved in cell signaling, representing essentially all targets covered by polyclonal antibodies. Cellular signal transduction typically begins with a receptor-ligand interaction, followed by an intracellular signal cascade, and resulting in a physical response. The potential responses are varied and specifically suited for the condition to which the cell must respond. The resulting cellular response is determined by the expression and activity of the intracellular signaling intermediates.