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Analysis of side chain oxysterols in the CSF is likely to provided useful information about cholesterol metabolism and ApoE function in the pathogenesis of AD .
 Chemical: oxysterols; Chemical: cholesterol
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: oxysterols; Chemical: cholesterol