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  • Title: Preparation of IgG subclass allotypes from polyclonal IgG.
    Author: Oxelius VA.
    Journal: Scand J Immunol; 1999 Apr; 49(4):395-8. PubMed ID: 10219765.
    Abstract:
    Two allotypes have been identified for each of the IgG subclasses IgG1, IgG2 and IgG3. These allotypes are referred to as G1m(a) and G1m(f), G2m(n) and G2m(-n), and G3m(g) and G3m(b). Using a pool of normal human serum and a combination of preparative electrophoresis, DEAE ion-exchange and protein A-Sepharose chromatography, it was possible to separate G1m(f) from G1m(a), G2m(-n) from G2m(n) and G3m(g) from G3m(b). Purification of G2m(-n) molecules is of special interest as no genetic marker has been found to identify this allotype.
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