TNF-α Enhances the Therapeutic Effects of MenSC-Derived Small Extracellular Vesicles on Inflammatory Bowel Disease through Macrophage Polarization by miR-24-3p

Table 2

H&E staining scoring.

Inflammatory infiltration	Score	Tissue injury	Score	Crypt change	Score
None	0	None	0	None	0
Mild	1	Mucosal lesion	1	1/3 crypt near the basement membrane was damaged	1
Middle	2	Mucosa and submucosa lesion	2	2/3 crypt near the basement membrane was damaged	2
Severe	3	Whole mucosa lesion	3	Only epithelium intact	3
				All crypts and epithelium were destroyed	4