20157
Exposure of mice to perfluorooctanoate ( PFOA ) evokes pronounced hepatomegaly along with significant alterations in both the histological structure and immune status of the liver .
 Chemical: perfluorooctanoate; Chemical: PFOA
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: perfluorooctanoate; Chemical: PFOA