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Macroscopic and microscopic lesions and IHC staining. Thin-walled small intestines from a PDCoV-inoculated pig at 4 DPI (A). Hematoxylin and eosin-stained tissue sections of small intestine (middle jejunum) from a PDCoV-inoculated pig at 4 DPI (B, 600× magnification and C, 100× magnification). IHC-stained tissue sections of small intestine (middle jejunum) from a PDCoV-inoculated pig at 4 DPI (D, E, F with 20×, 100×, and 600× magnifications, respectively).
