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Serological results of experimentally inoculated Pekin ducks. Kinetics of antibodies detected by IDVet NP ELISA, Idexx NP ELISA and HI test were determined for Pekin ducks inoculated with the H7N1/chicken virus (a, b, c), with the H3N1/domestic duck virus (d, e, f) or with the H7N7/Canada goose virus (g, h, i). Each symbol represents one specific animal. The black, bold line represents the average value for each test.
