Fig. 4From: Development of an indirect ELISA to detect PEDV specific IgA antibody based on a PEDV epidemic strainSensitivity and specificity of the i-ELISA. (A and B) OD450nm values of the positive serum with different dilution ratios were tested by both i-ELISA (A) and IDEXX (B) to determine the sensitivities; (C) Samples containing antibodies against other seven porcine viruses were test by the i-ELISA to determine the specificity. ***p < 0.001Back to article page