Figure 4  .

Stented human arterial sections. (A) Stented left anterior descending artery (LAD) section (scale bar = 500 µm), without histological staining showing preserved arterial wall architecture with an eccentric calcified plaque and stent struts in situ. (B) Haematoxylin and eosin stained section (scale bar = 50 µm) showing the stent strut embedded into relatively normal part of the arterial wall (arrowhead). (C) Haematoxylin and eosin staining showing complex calcified plaque (p) with an intact capsule (scale bar = 50 µm). Note position of the guidewire (arrowhead) in the arterial lumen. (D) Unstained LAD section, obtained at necropsy from another patient, showing preserved arterial architecture and stent struts in situ. The dissection (arrowhead) mostly involves the relatively normal area of the arterial wall. Note the adjacent calcified plaque (p).