Pathophysiological Examination
EVH, CVH, vein wall damage
H&E staining showed a significantly lower grade of vein wall damage in the NT group (2, IQR 1-2) in comparison with CVH and EVH groups (3, IQR 2-4, and 4, IQR 2-4, respectively, The antibody CD31 showed a significantly higher staining grade in the NT group compared to the CVH and EVH groups (The factor VIII staining revealed a significantly higher grade of staining in the NT group (4, IQR 2-4) in comparison with the CVH and EVH groups (2, IQR 2-4, and 2, IQR 2-2, respectively, The Caveolin staining showed a higher grade of staining in the NT group (4, IQR 4-4) and EVH group (4, IQR 2-4) in comparison with the CVH group (3, IQR 2-4) (The eNOS antibody showed a significantly higher grade of staining in the NT group (4, IQR 2.7-4) compared with CVH and EVH groups (2, IQR 2-4) and (2, IQR 2-2), respectively, (