4921
Liposomes prepared with an equimolar mixture of POPC , sphingomyelin and cholesterol , were chosen as models for lipid rafts .
 Chemical: POPC; Chemical: sphingomyelin; 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: POPC; Chemical: sphingomyelin; Chemical: cholesterol