Select this product for Molecular Innovations name, Mouse IgG2b Isotype Control and product number, MS-IGG2B. Mouse IgG2b Affinity Purified from Innovative Research has been recombinantly produced in hybridoma cell culture and purified. This is a frozen liquid buffered in 0.02M Sodium Phosphate; 0.15M NaCl; pH 7.2 and a purity of greater than >95% as determined by SDS-PAGE analysis. This product can be used as as an isotype control for ELISA, western blot, and a variety of additional applications. This Mouse IgG2b isotype control antibody (Anti-KLH) has been tested against selected species' cells and tissues to assure minimal cross reactivity. Purified by immobilized Protein A/G. IgG1 kappa class. >95 percent pure by SDS-PAGE and preservative free. More Details: Source: Hybridoma cell culture Purity: >95% At Innovative Research, we provide reliable, consistent products that deliver reliable, consistent results.