Attenuation of a Highly Pathogenic Porcine Deltacoronavirus Strain CZ2020 by a Serial Passage In Vitro

Figure 6

Histopathological lesion analysis of the intestines at 8 DPC. Representative images of the hematoxylin and eosin-stained duodenum, jejunum, and ileum tissue sections of inoculated piglets. Scale bar, 100 μm. The histopathological lesion was labeled with red arrows.