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Image of dot-blot immunoassay by 0.5 mg/mL concentration of conjugated p.A on Chi–GNPs surface for detection of antibody at various dilutions. (I): (A): anti-Echinococcus IgG 1:1, (B): anti-Echinococcus IgG 1:10, (C): anti-Echinococcus IgG 1:100, (D): control. (II): (A): Ag B, 1:1.2 mg/mL, 2:0.6 mg/mL, 3:0.3 mg/mL, 4:0.15 mg/mL. (B): Control.
