(a) Atrophic/withering crypts (red arrow) and lamina propria vascular congestion. Notice that the cellularity of the lamina propria is not significantly increased. (b) Vascular congestion and ...
Although the histopathologic changes associated with Cyclospora cayetanensis infection have been previously described, the histopathology and the appearance of various life cycle stages have not been ...
Infectious bursal disease in 35-day-old specific-pathogen-free (SPF) chickens was characterized clinically by its acute onset and brief duration. Clinical signs included depression, anorexia, diarrhea ...