18493
MDR - 1 is known to be localized in the cholesterol - and sphingolipid - enriched plasma membrane microdomains , known as lipid rafts .
 Chemical: cholesterol; Chemical: sphingolipid
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: cholesterol; Chemical: sphingolipid