11358
In this study , to develop therapeutic anti - HSV - 2 agents , the most potent PEI combined with ~ 200 nm - sized liposomes with or without oleic acid ( liposomes / PEI ) was selected in vitro and further evaluated using in vivo studies .
 Chemical: PEI; Chemical: oleic acid; Chemical: PEI
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: PEI; Chemical: oleic acid; Chemical: PEI