Click on image to view larger version.

Figure 4 LM. A, Group 3B. At 2 weeks after PTCA, focal lesions can be found with BrdU incorporation (arrow), especially underneath the endothelial lining but also elsewhere in the intima (i) and media (m). HRP-DAB with hematoxylin counterstain. Bar = 50 µm. B, Group 4B. At 12 weeks after PTCA, there is still a limited NI, sometimes with an additional elastic membrane underneath the endothelium (arrow). Resorcin-Fuchsin, i = intima, m = media. Bar = 50 µm.