RAT IgG2b kappa (?) isotype control, clone RG2bK

RAT IgG2b Kappa (?) isotype control has been prepared from concentrated cell culture supernatant by immunoaffinity chromatography using protein G.  In an Ouchterlony double diffusion assay the material is non-reactive with antisera to rat IgG1a, IgG1b, IgG3 , IgM , and IgA.  Assay by immunoelectrophoresis resulted in a single precipitin arc against anti-Rat IgG and anti-Rat serum.  Light and heavy chain composition has been confirmed. RAT IgG2b Kappa (?) isotype control is used in flow cytometry, western blot and ELISA and differentiate between immunoglobulin classes and subclasses. Isotype controls allow for the genetic variations or differences in the constant regions of the heavy and light chains. In Rat there are six relevant heavy chain isotypes and two light chain isotypes: heavy chain ? - IgA, ? - IgG 1, 2a, 2b, 2c and ? - IgM, light chain ? and ?.