MYOM2 and infection: Similar to the infection by porcine CoVs (Fig 1), overexpression of the WT PEDV M protein or PDCoV M protein contributed to a marked decrease in the percentage of ciliated cells, declining from approximately 45% in vector-overexpressed cells to below 15%, as well as a reduction in ciliary length from about 5 μm in vector-overexpressed cells to 3 μm or 2 μm, respectively.