11360
Cytotoxicity and antiviral activity in vitro , and the appearance of acute herpetic disease and virus yields in mice intravaginally administered with liposomes / PEI were evaluated in cell culture assays and a mouse genital herpes model , respectively .
 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