Mesenchymal Stem Cells Exhibit Both a Proinflammatory and Anti-Inflammatory Effect on Saccular Aneurysm Formation in a Rabbit Model

Figure 2

Histological sections of two saccular aneurysms, stained with VVG. Aneurysm sac is seen pointing towards the top right of both slices. The vessel wall consists of tunica adventitia (red), elastin fibers (black) in the tunica media, and a very thin layer of tunica intima adjacent to the lumen. (a) Blood clot is seen filling the aneurysm lumen. (b) Very small amount of blood clot seen at the apex of the aneurysm.

(a)

(b)