In this study, the virulence of PCV2 did not show an increasing trend with the advancement of infection time in the PCV2 alone group nor the PCV2 and PRRSV co-infected groups.
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Immune Molecules' mRNA Expression in Porcine Alveolar Macrophages Co-Infected with Porcine Reproductive and Respiratory Syndrome Virus and Porcine Circovirus Type 2.
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