Fig. 1From: An optimized swine dysentery murine model to characterize shedding and clinical disease associated with “Brachyspira hampsonii” infectionRepresentative histopathologic lesions in Experiment 1 and 2 mice. a catarrhal inflammation showing groups of degenerative epithelial cells (arrow) in the lumen of colon; 40×. b epithelial regeneration showing very frequent mitotic figures (arrows) are noted in the hyperplastic colonic crypts; 40×. c neutrophilic infiltration, showing neutrophils (arrow) in the lumen and in the lamina propria of the colon; 40×. d mucoid exudate showing large lakes of basophilic mucus (arrow) in the lumen of colon; 20 ×Back to article page