21275
In AD this protective mechanism seems to be inefficient , probably due to the presence of high concentrations of 27OHC , microvascular dysfunction and the decreased efficiency of ApoE4 as lipid transporter and A beta scavenger .
 Chemical: 27OHC
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: 27OHC