Improved Biocompatibility of Novel Biodegradable Scaffold Composed of Poly-L-lactic Acid and Amorphous Calcium Phosphate Nanoparticles in Porcine Coronary Artery

Figure 3

Histological cross sections of the stented porcine coronary arteries 28 days after implantation (hematoxylin-eosin staining ×4). (a) PLLA/ACP scaffold and (b) PLLA scaffold. Note the remarkable vascular wall swelling, tissue inflammation, and increased neointima thickness (red arrows) and reduced residual area (dashed blue circles) with PLLA scaffold.

(a)

(b)