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Susceptibility of IPI-2I cells to PEDV infection. (A) IPI-2I cells were mock-infected or infected with PEDV at a MOI of 5. At 24 hpi, indirect immunofluorescence assay was performed with a monoclonal antibody against PEDV N protein. (B) PEDV was passaged for five generations in IPI-2I cells. Viral genomic RNA was detected for each passage by RT-PCR.
