Fig. 7.2.5.19. Hemangioblastoma. E - tumorous endothelium, L - lumen of the blood vessel, arrow and insets - endothelium-specific Weibel-Palade bodies containing fine tubules. Scale = 1.5 µm. (Human, brain tumor.) Download the high resolution image; Download the high resolution image (inset a); Download the high resolution image (inset b).