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
Convention relating to the Status of Stateless Persons Convention relating to the Status of Stateless Persons The Convention relating to the Status of Stateless Persons is a 1954 United Nations multilateral treaty that aims to protect stateless individuals. The United Nations Charter and Universal Declaration of Human Rights were approved on 10 December 1948. Of significance, the Declaration at Article 15 affirms that: The Convention relating to the Status of Refugees was promulgated on 28 July 1951. Despite an original intention, it did not include any content about the status of stateless persons and there was no protocol regarding measures to effect the reduction of statelessness. On 26