18173
In the present study , we investigated the effects of three cholesterol - lowering agents ( probucol , an enhancer of cholesterol efflux ; simvastatin , a 3 - hydroxy - 3 - methylglutaryl coenzyme A reductase inhibitor ; and triparanol , a 3 beta - hydroxysterol - ^ 24 - reductase inhibitor ) on cholesterol synthesis , the KCNQ1 current ( I ( KCNQ1 ) ) , and the I ( Ks ) to clarify the differences in the modes of action of these agents on the I ( Ks ) .
 cholesterol, probucol, cholesterol, simvastatin, 3 - hydroxy - 3 - methylglutaryl, triparanol, 3 beta - hydroxysterol, cholesterol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 cholesterol, probucol, cholesterol, simvastatin, 3 - hydroxy - 3 - methylglutaryl, triparanol, 3 beta - hydroxysterol, cholesterol