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Cytopathic effect in Vero cells infected with chimeric NDV and APMV-2 viruses. (A) Vero cells in six-well plates were infected with each of the parental and chimeric viruses at a multiplicity of infection (MOI) of 0.01 PFU/cell and incubated for 48 h. (B) The viral plaques in the infected cells were visualized by immunoperoxidase staining using polyclonal antibody raised against the N protein of NDV (top row) or APMV-2 (bottom row).
