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Scatter plots showing the responses of Sj23-LHD-, SjSAP4-, SjSAP5-, SjSAP4 + Sj23-LHD- and SjSAP5 + Sj23-LHD-ELISA for the diagnosis of schistosomiasis japonica. Different serum dilution (a) 1:100, (b) 1:250; (c) 1:500; (d) 1:1000 were used for optimization. ‘KK-P’: Kato-Katz positive; ‘KK-N’: Kato-Katz negative.
