Sheep anti Mouse IgG2a (1a allotype specific)

The reactivity of the antiserum is restricted to the Fc portion of the IgG2a molecule. In immunoelectrophoresis and radial immunodiffusion, using various antiserum concentrations against mouse serum of the allelic type Igh-1a, including Balb/C, CBA, AKR and NZB, a single characteristic precipitin line is obtained which shows a reaction of identity with the precipitin line obtained with purified IgG2a(1a). No precipitation reaction is obtained with purified IgG2a(1b) (C57Bl and SJL/J), other IgG subclasses, IgA, IgG/Fab fragments or other serum proteins. In precipitating techniques as immunoelectrophoresis and radial immunodiffusion to identify the presence of IgG2a(1a) in mouse serum and other body fluids or to determine its concentration. To prepare an immunoadsorbent for the purification of mouse IgG2a(1a) from serum or plasma. This antiserum is not intended for use in non-precipitating antibodybinding or other highly sensitive assays. For such use labelled an unlabelled cytochemical and immunoassay grade reagents meeting the necessary additional specificity an performance requirements are available.