Are the HPAEC harvested directly from the pulmonary artery or are these microvascular endothelial cells?

Our HPAEC (C-12241) are harvested directly from the pulmonary artery. For their isolation, the vessel is explanted right after the position where the artery leaves the heart, including the bifurcation. HPAEC represent the innermost cell layer (i.e. the endothelial cells) of the pulmonary artery. We also supply pulmonary microvascular endothelial cells (HPMEC; C-12281) isolated from the capillaries of peripheral lung tissue.