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Humoral immune responses to KLH. IgM, IgA, IgG and the IgG-subclasses, IgG1, IgG2, IgG3 and IgG4 specific antibodies to KLH are expressed in arbitrary units per ml serum on days 1, 9 and 14. Horizontal bars and boxes show median antibody levels and interquartile range, respectively. Outlier values are indicated as a circle if present per group of values. No significant differences were measured (GLM repeated measures, factorial).
