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
Adjective phrase English is that an attributive adjective alone generally precedes the noun, e.g. "a proud man", whereas a head-initial or head-medial adjective phrase follows its noun, e.g. "a man proud of his children". A predicative adjective (phrase), in contrast, appears outside of the noun phrase that it describes, usually after a linking verb, e.g. "The man is proud of his children". There is a tendency to call a phrase an "adjectival phrase" when that phrase is functioning like an adjective phrase, but is not actually headed by an adjective. For example, in "Mr Clinton is a man of wealth", the prepositional