Purity: > 90% by SDS - PAGE Format: Liquid. In 20mM Tris-HCl buffer (pH 7.5) containing 0.15M NaCl, 50% glycerol, 1mM DTT, . FDCSP is a small secreted protein that is in follicular dendritic cells. This protein specifically binds to activated B cells, and functions as a regulator of antibody responses. It is also thought to contribute to tumor metastases by promoting cancer cell migration and invasion. Recombinant human FDCSP protein, fused to His-tag at N-terminus, was expressed in E.coli and purified by using conventional chromatography techniques.