DDX27 and infection: To investigate the changes in Chlorocebus sabaeus DDX27 during PRRSV infection, Marc-145 cells (a highly permissive cell line derived from the epithelial cells of a monkey kidney) were inoculated with the classical PRRSV strain CH-1a at 12, 24, or 36-hour post-infection (hpi) to determine the expression levels of DDX27.