Hepatic artery embolization hepatic artery. The percutaneous Seldinger technique introduces a catheter, which is a thin flexible tube made of medical grade material, into the hepatic artery under radiological control. This approach was developed for metastatic neuroendocrine tumors in the early 1970s. Tumor cells get over 90% of their nutrients from the hepatic artery, while the normal cells of the liver get about 70-80 percent of their nutrients and 50% their oxygen supply from the portal vein, and thus can survive with the hepatic artery effectively blocked. Once the catheter is carefully placed in the artery or in a selected branch, the blood
European Union and its Member States — Certain Measures Relating to the Energy Sector European Union and its Member States — Certain Measures Relating to the Energy Sector European Union and its Member States — Certain Measures Relating to the Energy Sector, DS476, is the formal name of a case brought by the Russian Federation against the European Union and its member states in the World Trade Organization's Dispute Settlement Body. The case was formally initiated with the filing of a complaint by Russia (in WTO terms, a "request for consultations") on April 30, 2014. The dispute concerns the EU's Third Energy Package, which consists of various two EU directives and EU regulations. Russia