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ELISA test. a The specific antibody EtMIC2 levels of chickens in six groups at 30 days and 38 days. b Detection of IFN-γ levels in the serum of chickens at 30 days. c Detection of IL-4 levels in the serum of chickens at 30 days. d Detection of IL-18 levels in the serum of chickens at 30 days. e Assay of SIgA in the intestinal lavage fluid of chickens at 30 days. f Detection results of the FnBPA antibody in the serum at 30 days. (*P < 0.05, **P < 0.01 and ***P < 0.001)
