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Antigen-specific IgG4 and total IgG levels in different Schistosoma japonicum clinical disease groups compared with non-exposed controls. Serum dilutions were 1:100 and 1:200 for the detection of IgG4 and total IgG levels, respectively. Asterisks indicate significant mean differences between each disease group and controls as estimated using Games–Howell post-analysis of variance tests.
