title: The effect of Gm(23) on the concentration of IgG2 and IgG4 in normal human serum.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D005260:Female; D005838:Genotype; D006801:Humans; D007125:Immunogenetics; D007074:Immunoglobulin G / Q000032:analysis* / Q000145:classification; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D012737:Sex Factors
chemical_list: D007074:Immunoglobulin G