1447
The purpose of this review is to summarize current knowledge about oxysterol - dependent activation by LXR of genes involved in reverse cholesterol transport , and what these defects of cell cholesterol homeostasis can teach us about the critical pathways of oxysterol generation for expression of LXR - dependent genes .
 Chemical: oxysterol; Chemical: cholesterol; Chemical: cholesterol; Chemical: oxysterol
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: oxysterol; Chemical: cholesterol; Chemical: cholesterol; Chemical: oxysterol