Beckman Cd28-Apc, Cd28.2, 0.5 mL, ASR

Beckman the cd28 antigen (tp44) is a homodimer of disulfide-linked chains, with a molecular weight of 44 kda each. cd28 antigen is expressed by a majority of cd3+ t lymphocytes. cd4+ t lymphocytes express the cd28 antigen more frequently than do cd8+ t lymphocytes. cd28 antigen is also present on plasma cells and thymocytes. this antigen is involved in the adhesion of t lymphocytes with b lymphocytes, through the b7/bb-1 (cd80) or b70/b7-2 (cd86) glycoproteins and provides a major co-stimulatory signal for t cell activation. - BKMPFZ (Additional S&H Or Hazmat Fees May Apply)