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 the end of the word, as in Latin: In Celtic languages, however, initial consonant lenition marks the adjective with a feminine singular noun, as in Irish: Often, distinction is made here between attributive and predicative usage. In English, adjectives never agree, and in French, they always agree. In German, they agree only when they are used attributively, and in Hungarian, they agree only when they are used predicatively: Adjective In linguistics, an adjective (abbreviated ) is a describing word, the main syntactic role of which is to qualify a noun or noun phrase, giving more information about the object signified.