Figure 2.

EVR and OR cause different types of SC injury. H&E staining of cross-sections of the SC from control, OR, and EVR dog#1 and dog#3 as indicated. Images from the second column from the left show extensive damage to anterior and lateral horns of the gray matter following OR surgery (arrowhead). In contrast, aortic stenting (EVR dog#1 and dog#3) primarily leads to white matter damage (two right columns). White matter damage was especially exacerbated in EVR dog#3 (arrow, with the yellow box corresponding to part of the posterior white column). Cross-sections were at L5 level. Scale bars are in µm.