CD40L/CD154/TRAP proteins stimulate T cell proliferation and cytokine production, acting as ligands for integrins and CD40 receptors to activate various cell-dependent effects such as B cell activation and NF-κ-B signaling. CD40L/CD154/TRAP Protein, Human (HEK293, N-hFc) is the recombinant human-derived CD40L/CD154/TRAP protein, expressed by HEK293 , with N-hFc labeled tag.