Background：CD154 （CD40 ligand） is also known as CD40L, gp39, TRAP and T-BAM. CD40 ligand is a 32-39 kD type II transmembrane glycoprotein. It is a member of the TNF superfamily and is expressed on activated T cells. It has been reported to be important for B cell costimulation following binding of its receptor, CD40. Additionally, binding of CD40L to CD40 on B cells promotes the secretion of immunoglobulin and Ig isotype switching. CD40L is also involved in the regulation of cytokine production by T cells.
Buffer：0.2 um filtered in PBS, pH7.2. Azide Free （AF）/Low Endotoxin （LE）： Contains no stabilizers or preservatives. Endotoxin level is ＜ 2 EU/mg （ ＜ 0.002EU/ug） as Determined by LAL gel clotting assay.
