Endoarterial Biopsy Samples

Photographic enlargement of distal end of catheter with freshly obtained biopsy sample.

 

 

 

Enlarged view of biopsy sample.
A layer of endothelial cells is shown on the lumen surface of the internal elastic lamina.
Hematoxylin and eosin stain

Biopsy samples from animals with experimentally induced pulmonary hypertension.

Hematoxylin and eosin stain showing neointimal formation. Hematoxylin and eosin stain showing mucoid degeneration. Tri-chrome stain showing a neointimal layer composed primarily of collagen.

 

 
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