Histology of human SV and IMA freshly isolated or cultured with arterial pO₂.

<p>Human SV (A-D) and IMA (E-H-) stained with Elastin Stain for both freshly isolated vessels (A,E) and vessels cultured at arterial pO₂ (B,F), typical cell culture pO₂ (C,G) and venous pO₂ (D,H). The intima (I), media (M), adventitia (Ad) and inner elastic lamina (IEL) are labeled when visible. Scale bar is 100 μm.