4170
The elastic niosomes were prepared from Tween 61 mixed with cholesterol at various concentrations of the edge activators ( sodium cholate ( NaC ) and sodium deoxycholate ( NaDC ) ; 0 . 25 , 0 . 5 , 2 . 5 , 5 and 10 % mole ) or ethanol ( 10 - 30 % v / v ) .
 Tween 61, cholesterol, sodium cholate, NaC, sodium deoxycholate, NaDC, ethanol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Tween 61, cholesterol, sodium cholate, NaC, sodium deoxycholate, NaDC, ethanol