References
CVH, EVH
Bar chart representing grade of the vein wall damage by H&E staining in the three different groups. Abbreviations: EVH—endoscopic vein harvesting, CVH—conventional vein harvesting, NT—no-touch harvesting, H&E—hematoxylin eosin staining.Histological presentation of the vein samples obtained by three different techniques shows detached endothelium (arrow) and focal defects of the adventitial layer with focally absent vasa vasorum (star) in CVH vein samples ((The bar chart presents patients’ distribution according to the different grades of the veins wall damage divided by groups and immunohistochemical antibodies. (Immunohistochemical staining of the CD31 shows focally moderate staining of the endothelium (arrow) and absence of the vasa vasorum in adventitial layer (star) in CVH vein samples ((Factor VIII immunohistochemical staining illustrate strong staining (brown colored) of the focally stretched endothelium (arrow) and absence of the vasa vasorum in adventitial layer (star) in CVH vein samples ((Caveolin staining of the vein samples obtained by conventional, endoscopic and no touch harvesting technique showing strong staining (brown colored) of the intimal and medial layer, illustrating focal defects of the medial (arrow) and adventitial layer (star) in CVH vein samples ((eNOS immunohistochemical staining showing focally minimal staining of the endothelium (arrow) and absence of the vasa vasorum in adventitial layer (star) in CVH vein samples ((