Glial cell line-derived neurotrophic factor improves impaired colonic motility in experimental colitis mice through connexin 43

Table 2 Histological scoring criteria

Score	Tissue damage	Lamina propria inflammatory cell infiltration
0	None	Infrequent
1	Isolated focal epithelial damage	Increased, some neutrophils
2	Mucosal erosions and ulcerations	Submucosal presence of inflammatory cell clusters
3	Extensive damage deep into the bowel wall	Transmural cell infiltrations