title: Distribution of IgG subclasses in commercial and some experimental gamma-globulin preparations.
abstract: The IgG subclass distribution was determined in six commercial and in four experimental human gamma-globulin preparations. The concentrations of IgG subclasses were measured in a modified radiommunoassay using subclass-specific antisera. In commercial gamma-globulins, the distribution of the subclasses corresponded roughly to the distribution in normal human serum. A considerable enrichment of the IgG 4 was found in experimental lots prepared either from the ethanol fraction III or from the rivanol-precipitable IgG.
mesh_terms: D001800:Blood Specimen Collection; D004587:Electrophoresis, Agar Gel; D006801:Humans; D007122:Immunoelectrophoresis; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D011863:Radioimmunoassay; D005719:gamma-Globulins
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D005719:gamma-Globulins