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
Nominalized adjective elaborated by Noam Chomsky, it is suggested that inflected adjectives are more likely to be nominalized because they have overtly-marked φ-features (such as grammatical number and gender), which makes them suitable for use as the complement of a determiner. Determiners with unvalued φ-features must find a complement with a valued φ-feature to meet semantic comprehension. In the diagrams below, the determiner is "the", and its complement is either the noun phrase "poor people" or the nominalized adjective "poor". As the frequency of nominalized adjective use decreased, the frequency of structures using the prop-word "one" increased (phrases such as "the large"