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(a) Effects of B cell activation factor (TNFSF13B) (rs10508198) polymorphism on specific immunoglobulin (Ig)G levels against Ascaris. Homozygotes for the wild-type genotype have higher levels of IgG to Ascaris than carriers of one or two doses of the variant allele C. (b) Effects of TNFSF13B (rs10508198) polymorphism on specific IgE levels to ABA-1 in asthmatics. CC homozygotes have lower levels of specific IgE against ABA-1 compared with carriers of the other genotypes.
