Figure 2:

Histological analysis did not evidence endothelial disruption in ERAH versus ORAH. (A) Immunohistochemistry for erythroblast transformation specific-related gene, transcriptional factor expressed in the endothelial cells, was performed in 16 ERAH and 12 ORAH formalin-fixed specimens. Representative images erythroblast transformation specific-related gene-staining of the endothelium in both groups. (B) Quantitative analysis of the number of the endothelial cells lining the circumference of the radial artery. The data were expressed as ratio of the number of the endothelial cells and the circumference (μm). Data are presented as mean with standard deviation. ERAH: endoscopic radial artery harvesting; ORAH: open radial artery harvesting.