Recombinant Mouse Cluster Of Differentiation 28 (CD28) is a purified Prokaryotic Protein. Purity: >95% by SDS-PAGE. Host: E. coli. Endotoxin Level: <1.0EU per 1ug, by the LAL method. Species: Mouse (Mus musculus). Target Name: Cluster Of Differentiation 28 (CD28). Target Synonyms: Tp44, T-Cell-Specific Surface Glycoprotein. Accession Number: P31041. Gene ID: 12487. Expression Region: Asn20~Leu150. Tag Info: N-terminal His Tag. Theoretical MW: 19kDa. Buffer: PBS, pH7.4, containing 0.01% SKL, 5% Trehalose. Storage: -20C. Avoid repeated freeze/thaw cycles. Restrictions: For Research Use Only. Not for use in diagnostic procedures.