2044
The dependence of the interfacial tension of a phosphatidylethanolamine ( PE ) monolayer on the pH of the aqueous solution has been studied .
 Chemical: phosphatidylethanolamine
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: phosphatidylethanolamine