Intraoperative visualization of the primo-vascular system attached to tumor nodules in i.p. lung cancer mouse models.

<p>Primo-vessels (arrows) stained with trypan blue mainly located around tumor nodules (arrowheads) which were visible after 4 weeks of i.p. injection with NCI-H460 cells. Especially some primo-vessels showed distribution patterns either going inside or surrounding tumor nodules. SI; small intestine, AW; abdominal wall.