Purity: > 90% by SDS - PAGE Format: Liquid. In Phosphate Buffered Saline (pH 7.4) containing 10% glycerol. B7H3, also known as CD276 antigen, is a member of the B7 family of immune regulatory ligands that is thought to attenuate peripheral immune responses through co-inhibition. It modulates T-cell-mediated immune responses and the development of acute and chronic transplant rejection. This protein plays a positive regulatory role in bone formation and has a dual role in the bone-immune interface. It induces antitumor immunity as it activates both acquired and innate immunity leading to natural killer cell and CD8 T-cell dependent killing of tumor cells. Recombinant mouse B7H3, fused to His-tag at C-terminus, was expressed in insect cell and purified by using conventional chromatography techniques.