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The aqueous media included phosphate buffered saline ( PBS ) and PBS containing 10 % methanol , 10 % ethanol , 10 % hydroxypropyl beta - cyclodextrin ( HP - beta CD ) , 1 % sodium citrate and 1 % Tween 80 .
 phosphate, methanol, ethanol, hydroxypropyl beta - cyclodextrin, HP - beta CD, sodium citrate, Tween 80
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 phosphate, methanol, ethanol, hydroxypropyl beta - cyclodextrin, HP - beta CD, sodium citrate, Tween 80