Hepatic stellate cell in the cell body store vitamin A as retinol ester. The function and role of quiescent hepatic stellate cells is unclear. Recent evidence suggests a role as a liver-resident antigen-presenting cell, presenting lipid antigens to and stimulating proliferation of NKT cells. When the liver is damaged, stellate cells can change into an "activated" state. The activated stellate cell is characterized by proliferation, contractility, and chemotaxis. This state of the stellate cell is the main source of extracellular matrix production in liver injury. This attribute makes it a key factor in the pathophysiology of the liver. The amount of stored vitamin
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