Fig 5. Photomicrographs of recanalized retia after embolization with Eudragit mixture. Left, (pig 4) Note the patent lumen containing several erythrocytes (thin arrow) and the embolized lumen (thick arrow), both in the same embolized artery. The empty spaces in the embolized lumen are due to dissolution of the polymer during processing. This change may represent a step in recanalization. The patent lumen may be sequestered from the embolized vessel. Right, (pig 6) Small patent vessels are present within the embolus. This finding is also noted with n-BCA embolization. Left, H&E, original magnification x400. Right, H&E, original magnification x100.