Fig 3. Associations of ELISA test results with age and BIBD status.
A) UGV1 IgY, B) UGV1 IgM, C) UHV1 NP IgY, D) UHV1 NP IgM, E) UHV1 NPC IgY, F) UHV1 NPC IgM. The red lines indicate the ELISA cut-off point.
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